{"id":"CVE-2026-97873","aliases":["DEBIAN-CVE-2026-97873","EUVD-2026-91987","GHSA-78x9-mjv2-rr3v","SUSE-SU-2026:24461-1","SUSE-SU-2026:4797-1","UBUNTU-CVE-2026-97873","openSUSE-SU-2026:12090-1","openSUSE-SU-2026:22169-1"],"status":"published","title":"Legacy PBES1 and PKCS#12 PBE iteration count honoured unbounded in the raw JCA provider","description":"In Bouncy Castle for Java before 1.86, the raw JCA provider's legacy PBES1 (PKCS#5 scheme 1) and PKCS#12 PBE families ran their password-based key derivation with an iteration count taken from untrusted input without bounding it, so a small input could dictate an arbitrary amount of work before anything could be verified. The AlgorithmParameters implementations (PKCS12PBE and its object identifier aliases, and PBKDF1) accepted any count from an encoded PKCS12PBEParams or PBEParameter, narrowing a value beyond the int range with intValue(), and every Cipher, Mac and SecretKeyFactory in these families derived with whatever count it was given, including one decoded by another provider's AlgorithmParameters, as when javax.crypto.EncryptedPrivateKeyInfo.getKeySpec() decrypts a PKCS#12 PBE-protected private key with BC. Both the parameter parse and the derivations now reject a negative or over-limit count under the org.bouncycastle.pbe.max_iteration_count property (default 10,000,000) that already bounded PBKDF2 (CVE-2026-17508), and the parse rejects a count beyond the int range rather than narrowing it. This issue also affects Bouncy Castle for Java LTS before 2.73.13.","severity":{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/U:Amber","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00263,"percentile":0.18199,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-770"],"published":"2026-10-03T08:04:43Z","modified":"2026-11-04T17:27:19Z","fixes":[{"ecosystem":"Debian:14","package":"bouncycastle","fixed_in":["1.86-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"bouncycastle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.72-2","1.77-1","1.80-1","1.80-2","1.80-3","1.86-1"]},{"source":"osv","ecosystem":"Debian:13","package":"bouncycastle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.80-3","1.86-1"]},{"source":"osv","ecosystem":"Debian:14","package":"bouncycastle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.86-1"}]}],"versions":["1.80-3"]},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 16.0","package":"bouncycastle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.86-160000.1.1"}]}],"bundled":14},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server for SAP applications 16.0","package":"bouncycastle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.86-160000.1.1"}]}],"bundled":14},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Module for Development Tools 15 SP7","package":"bouncycastle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.86-150200.3.41.1"}]}],"bundled":14},{"source":"osv","ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS","package":"bouncycastle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.86-150200.3.41.1"}]}],"bundled":14},{"source":"osv","ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS","package":"bouncycastle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.86-150200.3.41.1"}]}],"bundled":14},{"source":"osv","ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS","package":"bouncycastle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.86-150200.3.41.1"}]}],"bundled":14},{"source":"osv","ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS","package":"bouncycastle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.86-150200.3.41.1"}]}],"bundled":14},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 15 SP4-LTSS","package":"bouncycastle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.86-150200.3.41.1"}]}],"bundled":14},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 15 SP5-LTSS","package":"bouncycastle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.86-150200.3.41.1"}]}],"bundled":14},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 15 SP6-LTSS","package":"bouncycastle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.86-150200.3.41.1"}]}],"bundled":14},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 15 SP4","package":"bouncycastle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.86-150200.3.41.1"}]}],"bundled":14},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 15 SP5","package":"bouncycastle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.86-150200.3.41.1"}]}],"bundled":14},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 15 SP6","package":"bouncycastle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.86-150200.3.41.1"}]}],"bundled":14},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"bouncycastle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.49+dfsg-3ubuntu1","1.51-4ubuntu1","1.51-4ubuntu1+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"bouncycastle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.57-1","1.58-1","1.59-1","1.59-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"bouncycastle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.61-1","1.61-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"bouncycastle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.68-2","1.68-4","1.68-5","1.68-5ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"bouncycastle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.72-2","1.77-1","1.77-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"bouncycastle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.80-3"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"bouncycastle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.80-3"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"bouncycastle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.86-1.1"}]}],"bundled":14},{"source":"osv","ecosystem":"openSUSE:Leap 16.0","package":"bouncycastle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.86-160000.1.1"}]}],"bundled":14}],"products":[{"vendor":"legion of the bouncy castle inc.","product":"bc-java"},{"vendor":"legion of the bouncy castle inc.","product":"bc-lts-java"}],"references":[{"url":"https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%9097873","tags":["vendor-advisory","advisory","report"]},{"url":"https://github.com/bcgit/bc-java/commit/766a31026ac24ed3c6cad8662058ba450c338da1","tags":["patch","fix","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97873","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-78x9-mjv2-rr3v"},{"url":"https://www.bouncycastle.org/download/bouncy-castle-java-lts/","tags":["web"]},{"url":"https://www.bouncycastle.org/download/bouncy-castle-java/","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97873.json","tags":["advisory"]},{"url":"https://github.com/bcgit/bc-java","tags":["package"]},{"url":"https://github.com/bcgit/bc-lts-java","tags":["package"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-97873","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-202624461-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1284065","tags":["report"]},{"url":"https://bugzilla.suse.com/1284073","tags":["report"]},{"url":"https://bugzilla.suse.com/1284075","tags":["report"]},{"url":"https://bugzilla.suse.com/1284165","tags":["report"]},{"url":"https://bugzilla.suse.com/1284205","tags":["report"]},{"url":"https://bugzilla.suse.com/1284212","tags":["report"]},{"url":"https://bugzilla.suse.com/1284213","tags":["report"]},{"url":"https://bugzilla.suse.com/1284215","tags":["report"]},{"url":"https://bugzilla.suse.com/1284218","tags":["report"]},{"url":"https://bugzilla.suse.com/1284219","tags":["report"]},{"url":"https://bugzilla.suse.com/1284220","tags":["report"]},{"url":"https://bugzilla.suse.com/1284221","tags":["report"]},{"url":"https://bugzilla.suse.com/1284222","tags":["report"]},{"url":"https://bugzilla.suse.com/1284224","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2026-17507","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-17508","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-18036","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-18040","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-71885","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-71886","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-71887","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-71888","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-71889","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-71890","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-71891","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-71892","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-85515","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-97873","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20264797-1/","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-97873","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-97873","tags":["report"]},{"url":"","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-97873","title":"Legacy PBES1 and PKCS#12 PBE iteration count honoured unbounded in the raw JCA provider","description":"In Bouncy Castle for Java before 1.86, the raw JCA provider's legacy PBES1 (PKCS#5 scheme 1) and PKCS#12 PBE families ran their password-based key derivation with an iteration count taken from untrusted input without bounding it, so a small input could dictate an arbitrary amount of work before anything could be verified. The AlgorithmParameters implementations (PKCS12PBE and its object identifier aliases, and PBKDF1) accepted any count from an encoded PKCS12PBEParams or PBEParameter, narrowing a value beyond the int range with intValue(), and every Cipher, Mac and SecretKeyFactory in these families derived with whatever count it was given, including one decoded by another provider's AlgorithmParameters, as when javax.crypto.EncryptedPrivateKeyInfo.getKeySpec() decrypts a PKCS#12 PBE-protected private key with BC. Both the parameter parse and the derivations now reject a negative or over-limit count under the org.bouncycastle.pbe.max_iteration_count property (default 10,000,000) that already bounded PBKDF2 (CVE-2026-17508), and the parse rejects a count beyond the int range rather than narrowing it. This issue also affects Bouncy Castle for Java LTS before 2.73.13.","status":"published","published":"2026-10-03T08:04:43.322Z","modified":"2026-10-05T17:00:58.75Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/U:Amber","level":"medium","assessor":"cna"}],"cwes":["CWE-770"],"updated_at":"2026-11-02T13:44:07.200604Z"}],"euvd":[{"id":"EUVD-2026-91987","description":"In Bouncy Castle for Java before 1.86, the raw JCA provider's legacy PBES1 (PKCS#5 scheme 1) and PKCS#12 PBE families ran their password-based key derivation with an iteration count taken from untrusted input without bounding it, so a small input could dictate an arbitrary amount of work before anything could be verified. The AlgorithmParameters implementations (PKCS12PBE and its object identifier aliases, and PBKDF1) accepted any count from an encoded PKCS12PBEParams or PBEParameter, narrowing a value beyond the int range with intValue(), and every Cipher, Mac and SecretKeyFactory in these families derived with whatever count it was given, including one decoded by another provider's AlgorithmParameters, as when javax.crypto.EncryptedPrivateKeyInfo.getKeySpec() decrypts a PKCS#12 PBE-protected private key with BC. Both the parameter parse and the derivations now reject a negative or over-limit count under the org.bouncycastle.pbe.max_iteration_count property (default 10,000,000) that already bounded PBKDF2 (CVE-2026-17508), and the parse rejects a count beyond the int range rather than narrowing it. This issue also affects Bouncy Castle for Java LTS before 2.73.13.","status":"published","published":"2026-10-03T08:04:43Z","modified":"2026-10-05T17:00:58Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/U:Amber","level":"medium"}],"updated_at":"2026-11-02T17:27:39.384414Z"}],"ghsa":[{"id":"GHSA-78x9-mjv2-rr3v","title":"In Bouncy Castle for Java before 1.86, the raw JCA provider's legacy PBES1 (PKCS#5 scheme 1) and...","description":"In Bouncy Castle for Java before 1.86, the raw JCA provider's legacy PBES1 (PKCS#5 scheme 1) and PKCS#12 PBE families ran their password-based key derivation with an iteration count taken from untrusted input without bounding it, so a small input could dictate an arbitrary amount of work before anything could be verified. The AlgorithmParameters implementations (PKCS12PBE and its object identifier aliases, and PBKDF1) accepted any count from an encoded PKCS12PBEParams or PBEParameter, narrowing a value beyond the int range with intValue(), and every Cipher, Mac and SecretKeyFactory in these families derived with whatever count it was given, including one decoded by another provider's AlgorithmParameters, as when javax.crypto.EncryptedPrivateKeyInfo.getKeySpec() decrypts a PKCS#12 PBE-protected private key with BC. Both the parameter parse and the derivations now reject a negative or over-limit count under the org.bouncycastle.pbe.max_iteration_count property (default 10,000,000) that already bounded PBKDF2 (CVE-2026-17508), and the parse rejects a count beyond the int range rather than narrowing it. This issue also affects Bouncy Castle for Java LTS before 2.73.13.","status":"published","published":"2026-10-03T09:31:18Z","modified":"2026-10-03T09:31:26Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Amber","level":"medium"}],"cwes":["CWE-770"],"updated_at":"2026-11-02T15:12:44.85091Z"}],"nvd":[{"id":"CVE-2026-97873","description":"In Bouncy Castle for Java before 1.86, the raw JCA provider's legacy PBES1 (PKCS#5 scheme 1) and PKCS#12 PBE families ran their password-based key derivation with an iteration count taken from untrusted input without bounding it, so a small input could dictate an arbitrary amount of work before anything could be verified. The AlgorithmParameters implementations (PKCS12PBE and its object identifier aliases, and PBKDF1) accepted any count from an encoded PKCS12PBEParams or PBEParameter, narrowing a value beyond the int range with intValue(), and every Cipher, Mac and SecretKeyFactory in these families derived with whatever count it was given, including one decoded by another provider's AlgorithmParameters, as when javax.crypto.EncryptedPrivateKeyInfo.getKeySpec() decrypts a PKCS#12 PBE-protected private key with BC. Both the parameter parse and the derivations now reject a negative or over-limit count under the org.bouncycastle.pbe.max_iteration_count property (default 10,000,000) that already bounded PBKDF2 (CVE-2026-17508), and the parse rejects a count beyond the int range rather than narrowing it. This issue also affects Bouncy Castle for Java LTS before 2.73.13.","status":"published","published":"2026-10-03T09:17:06.28Z","modified":"2026-10-06T14:49:40.823Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Amber","level":"medium","assessor":"secondary"}],"cwes":["CWE-770"],"updated_at":"2026-11-02T14:12:53.75133Z"}],"osv":[{"id":"CVE-2026-97873","title":"Legacy PBES1 and PKCS#12 PBE iteration count honoured unbounded in the raw JCA provider","description":"In Bouncy Castle for Java before 1.86, the raw JCA provider's legacy PBES1 (PKCS#5 scheme 1) and PKCS#12 PBE families ran their password-based key derivation with an iteration count taken from untrusted input without bounding it, so a small input could dictate an arbitrary amount of work before anything could be verified. The AlgorithmParameters implementations (PKCS12PBE and its object identifier aliases, and PBKDF1) accepted any count from an encoded PKCS12PBEParams or PBEParameter, narrowing a value beyond the int range with intValue(), and every Cipher, Mac and SecretKeyFactory in these families derived with whatever count it was given, including one decoded by another provider's AlgorithmParameters, as when javax.crypto.EncryptedPrivateKeyInfo.getKeySpec() decrypts a PKCS#12 PBE-protected private key with BC. Both the parameter parse and the derivations now reject a negative or over-limit count under the org.bouncycastle.pbe.max_iteration_count property (default 10,000,000) that already bounded PBKDF2 (CVE-2026-17508), and the parse rejects a count beyond the int range rather than narrowing it. This issue also affects Bouncy Castle for Java LTS before 2.73.13.","status":"published","published":"2026-10-03T08:04:43.322Z","modified":"2026-11-04T17:27:19.538692513Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/U:Amber","level":"medium"}],"cwes":["CWE-770"],"updated_at":"2026-11-04T17:42:25.919377Z"},{"id":"DEBIAN-CVE-2026-97873","description":"In Bouncy Castle for Java before 1.86, the raw JCA provider's legacy PBES1 (PKCS#5 scheme 1) and PKCS#12 PBE families ran their password-based key derivation with an iteration count taken from untrusted input without bounding it, so a small input could dictate an arbitrary amount of work before anything could be verified. The AlgorithmParameters implementations (PKCS12PBE and its object identifier aliases, and PBKDF1) accepted any count from an encoded PKCS12PBEParams or PBEParameter, narrowing a value beyond the int range with intValue(), and every Cipher, Mac and SecretKeyFactory in these families derived with whatever count it was given, including one decoded by another provider's AlgorithmParameters, as when javax.crypto.EncryptedPrivateKeyInfo.getKeySpec() decrypts a PKCS#12 PBE-protected private key with BC. Both the parameter parse and the derivations now reject a negative or over-limit count under the org.bouncycastle.pbe.max_iteration_count property (default 10,000,000) that already bounded PBKDF2 (CVE-2026-17508), and the parse rejects a count beyond the int range rather than narrowing it. This issue also affects Bouncy Castle for Java LTS before 2.73.13.","status":"published","published":"2026-10-03T09:17:06.28Z","modified":"2026-10-07T09:47:33.97400857Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Amber","level":"medium"}],"updated_at":"2026-11-02T15:46:07.756422Z"},{"id":"UBUNTU-CVE-2026-97873","description":"In Bouncy Castle for Java before 1.86, the raw JCA provider's legacy PBES1 (PKCS#5 scheme 1) and PKCS#12 PBE families ran their password-based key derivation with an iteration count taken from untrusted input without bounding it, so a small input could dictate an arbitrary amount of work before anything could be verified. The AlgorithmParameters implementations (PKCS12PBE and its object identifier aliases, and PBKDF1) accepted any count from an encoded PKCS12PBEParams or PBEParameter, narrowing a value beyond the int range with intValue(), and every Cipher, Mac and SecretKeyFactory in these families derived with whatever count it was given, including one decoded by another provider's AlgorithmParameters, as when javax.crypto.EncryptedPrivateKeyInfo.getKeySpec() decrypts a PKCS#12 PBE-protected private key with BC. Both the parameter parse and the derivations now reject a negative or over-limit count under the org.bouncycastle.pbe.max_iteration_count property (default 10,000,000) that already bounded PBKDF2 (CVE-2026-17508), and the parse rejects a count beyond the int range rather than narrowing it. This issue also affects Bouncy Castle for Java LTS before 2.73.13.","status":"published","published":"2026-10-03T09:17:00Z","modified":"2026-10-17T13:01:20.20776101Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/U:Amber","level":"medium"}],"updated_at":"2026-11-02T16:57:48.647391Z"},{"id":"openSUSE-SU-2026:12090-1","title":"bouncycastle-1.86-1.1 on GA media","description":"These are all security issues fixed in the bouncycastle-1.86-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-10-09T00:00:00Z","modified":"2026-10-10T17:23:22.29222791Z","updated_at":"2026-11-02T16:58:40.245664Z"},{"id":"openSUSE-SU-2026:22169-1","title":"Security update for bouncycastle","description":"This update for bouncycastle fixes the following issues:\n\nUpdate to 1.86:\n\n- CVE-2026-17507: negative signed leaf_index values from unsigned wire encodings can cause heap exhaustion\n  (bsc#1284075).\n- CVE-2026-17508: unbounded KDF iteration and memory parameters can cause resource exhaustion (bsc#1284073).\n- CVE-2026-18036: variable-time modulo and division operations in NTRU implementation can allow timing side-channel\n  attacks (bsc#1284065).\n- CVE-2026-18040: table lookups and variable-time duplicate scanning in HQC can cause cache side-channel leaks\n  (bsc#1284205).\n- CVE-2026-71885: unbound X.509 certificates in MLS LeafNode verification can cause identity impersonation and group\n  message interception (bsc#1284165).\n- CVE-2026-71886: unvalidated CERTIFY_OTHER flags in OpenPGP subkeys can cause unauthorized trust delegations and\n  identity spoofing (bsc#1284212).\n- CVE-2026-71887: missing primary key back-signature validation on subkeys can cause signature misattribution and trust\n  context spoofing (bsc#1284213).\n- CVE-2026-71888: disagreement between digestAlgorithm and authAttrs in CMS parsing can cause unauthenticated attribute\n  injection (bsc#1284215).\n- CVE-2026-71889: skipped leaf certificate evaluation in checkNameConstraints can cause X.509 name constraint bypasses\n  (bsc#1284218).\n- CVE-2026-71890: unbounded Remove proposals in external MLS commits can cause arbitrary group member eviction and\n  session takeover (bsc#1284219).\n- CVE-2026-71891: forged ECPoint curves in BLS12-381 key validation can cause aggregate signature verification bypasses\n  (bsc#1284220).\n- CVE-2026-71892: type mismatch in CMS key-transport validation can cause key-size enforcement bypasses for HKDF-derived\n  content keys (bsc#1284221).\n- CVE-2026-85515: laundered EOF exceptions in OpenPGP message stream processing can cause unregistered truncation errors\n  and integrity check bypasses (bsc#1284222).\n- CVE-2026-97873: unbounded iteration counts in legacy PBES1 and PKCS#12 PBE implementations can cause resource\n  exhaustion (bsc#1284224).\n","status":"published","published":"2026-10-26T13:05:47Z","modified":"2026-11-01T17:23:28.414155623Z","updated_at":"2026-11-02T16:58:42.426393Z"},{"id":"SUSE-SU-2026:24461-1","title":"Security update for bouncycastle","description":"This update for bouncycastle fixes the following issues:\n\nUpdate to 1.86:\n\n- CVE-2026-17507: negative signed leaf_index values from unsigned wire encodings can cause heap exhaustion\n  (bsc#1284075).\n- CVE-2026-17508: unbounded KDF iteration and memory parameters can cause resource exhaustion (bsc#1284073).\n- CVE-2026-18036: variable-time modulo and division operations in NTRU implementation can allow timing side-channel\n  attacks (bsc#1284065).\n- CVE-2026-18040: table lookups and variable-time duplicate scanning in HQC can cause cache side-channel leaks\n  (bsc#1284205).\n- CVE-2026-71885: unbound X.509 certificates in MLS LeafNode verification can cause identity impersonation and group\n  message interception (bsc#1284165).\n- CVE-2026-71886: unvalidated CERTIFY_OTHER flags in OpenPGP subkeys can cause unauthorized trust delegations and\n  identity spoofing (bsc#1284212).\n- CVE-2026-71887: missing primary key back-signature validation on subkeys can cause signature misattribution and trust\n  context spoofing (bsc#1284213).\n- CVE-2026-71888: disagreement between digestAlgorithm and authAttrs in CMS parsing can cause unauthenticated attribute\n  injection (bsc#1284215).\n- CVE-2026-71889: skipped leaf certificate evaluation in checkNameConstraints can cause X.509 name constraint bypasses\n  (bsc#1284218).\n- CVE-2026-71890: unbounded Remove proposals in external MLS commits can cause arbitrary group member eviction and\n  session takeover (bsc#1284219).\n- CVE-2026-71891: forged ECPoint curves in BLS12-381 key validation can cause aggregate signature verification bypasses\n  (bsc#1284220).\n- CVE-2026-71892: type mismatch in CMS key-transport validation can cause key-size enforcement bypasses for HKDF-derived\n  content keys (bsc#1284221).\n- CVE-2026-85515: laundered EOF exceptions in OpenPGP message stream processing can cause unregistered truncation errors\n  and integrity check bypasses (bsc#1284222).\n- CVE-2026-97873: unbounded iteration counts in legacy PBES1 and PKCS#12 PBE implementations can cause resource\n  exhaustion (bsc#1284224).\n","status":"published","published":"2026-10-26T13:14:44Z","modified":"2026-11-04T17:23:17.638528053Z","updated_at":"2026-11-04T17:43:22.558805Z"},{"id":"SUSE-SU-2026:4797-1","title":"Security update for bouncycastle","description":"This update for bouncycastle fixes the following issues:\n\n- CVE-2026-17507: negative signed leaf_index values from unsigned wire encodings can cause heap exhaustion\n  (bsc#1284075).\n- CVE-2026-17508: unbounded KDF iteration and memory parameters can cause resource exhaustion (bsc#1284073).\n- CVE-2026-18036: variable-time modulo and division operations in NTRU implementation can allow timing side-channel\n  attacks (bsc#1284065).\n- CVE-2026-18040: table lookups and variable-time duplicate scanning in HQC can cause cache side-channel leaks\n  (bsc#1284205).\n- CVE-2026-71885: unbound X.509 certificates in MLS LeafNode verification can cause identity impersonation and group\n  message interception (bsc#1284165).\n- CVE-2026-71886: unvalidated CERTIFY_OTHER flags in OpenPGP subkeys can cause unauthorized trust delegations and\n  identity spoofing (bsc#1284212).\n- CVE-2026-71887: missing primary key back-signature validation on subkeys can cause signature misattribution and trust\n  context spoofing (bsc#1284213).\n- CVE-2026-71888: disagreement between digestAlgorithm and authAttrs in CMS parsing can cause unauthenticated attribute\n  injection (bsc#1284215).\n- CVE-2026-71889: skipped leaf certificate evaluation in checkNameConstraints can cause X.509 name constraint bypasses\n  (bsc#1284218).\n- CVE-2026-71890: unbounded Remove proposals in external MLS commits can cause arbitrary group member eviction and\n  session takeover (bsc#1284219).\n- CVE-2026-71891: forged ECPoint curves in BLS12-381 key validation can cause aggregate signature verification bypasses\n  (bsc#1284220).\n- CVE-2026-71892: type mismatch in CMS key-transport validation can cause key-size enforcement bypasses for HKDF-derived\n  content keys (bsc#1284221).\n- CVE-2026-85515: laundered EOF exceptions in OpenPGP message stream processing can cause unregistered truncation errors\n  and integrity check bypasses (bsc#1284222).\n- CVE-2026-97873: unbounded iteration counts in legacy PBES1 and PKCS#12 PBE implementations can cause resource\n  exhaustion (bsc#1284224).\n\nChanges for bouncycastle:\n\n- Updated to version 1.86.\n","status":"published","published":"2026-10-21T07:54:59Z","modified":"2026-10-21T20:02:15.286117133Z","updated_at":"2026-11-02T15:54:05.838224Z"}]}}