CVE-2026-107705
Poppler 0.42.0 through 26.10.0 Stack Buffer Overflow via Decrypt::revision6Hash()
Poppler 0.42.0 through 26.10.0 contains a stack-based buffer overflow in Decrypt::revision6Hash() that allows attackers controlling the password to overwrite stack memory when opening AESV3/R6 encrypted PDFs. Attackers can supply a password longer than 127 bytes through applications using the libpoppler, libpoppler-glib or C++ API to overflow the K1 and E buffers, crashing the process or corrupting memory.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Poppler 0.42.0 through 26.10.0 Stack Buffer Overflow via Decrypt::revision6Hash()
Poppler 0.42.0 through 26.10.0 contains a stack-based buffer overflow in Decrypt::revision6Hash() that allows attackers controlling the password to overwrite stack memory when opening AESV3/R6 encrypted PDFs. Attackers can supply a password longer than 127 bytes through applications using the libpoppler, libpoppler-glib or C++ API to overflow the K1 and E buffers, crashing the process or corrupting memory.
- Record
CVE-2026-107705- CVSS 4.0
- 8.3 High
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H - Weakness
- CWE-121
- Updated
- 2026-11-02
EUVDEUVD-2026-95208
Poppler 0.42.0 through 26.10.0 contains a stack-based buffer overflow in Decrypt::revision6Hash() that allows attackers controlling the password to overwrite stack memory when opening AESV3/R6 encrypted PDFs. Attackers can supply a password longer than 127 bytes through applications using the libpoppler, libpoppler-glib or C++ API to overflow the K1 and E buffers, crashing the process or corrupting memory.
- Record
EUVD-2026-95208- CVSS 4.0
- 8.3 High
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-939q-g65h-55jw
Poppler 0.42.0 through 26.10.0 contains a stack-based buffer overflow in Decrypt::revision6Hash()...
Poppler 0.42.0 through 26.10.0 contains a stack-based buffer overflow in Decrypt::revision6Hash() that allows attackers controlling the password to overwrite stack memory when opening AESV3/R6 encrypted PDFs. Attackers can supply a password longer than 127 bytes through applications using the libpoppler, libpoppler-glib or C++ API to overflow the K1 and E buffers, crashing the process or corrupting memory.
- Record
GHSA-939q-g65h-55jw- CVSS 4.0
- 8.3 High
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/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:X - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H - Weakness
- CWE-121
- Updated
- 2026-11-02
NVD
Poppler 0.42.0 through 26.10.0 contains a stack-based buffer overflow in Decrypt::revision6Hash() that allows attackers controlling the password to overwrite stack memory when opening AESV3/R6 encrypted PDFs. Attackers can supply a password longer than 127 bytes through applications using the libpoppler, libpoppler-glib or C++ API to overflow the K1 and E buffers, crashing the process or corrupting memory.
- Record
CVE-2026-107705- CVSS 4.0
- 8.3 High
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/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:X - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H - Weakness
- CWE-121
- Updated
- 2026-11-02
OSVBELL-CVE-2026-107705
- Record
BELL-CVE-2026-107705- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H - Updated
- 2026-11-02
OSV
Poppler 0.42.0 through 26.10.0 Stack Buffer Overflow via Decrypt::revision6Hash()
Poppler 0.42.0 through 26.10.0 contains a stack-based buffer overflow in Decrypt::revision6Hash() that allows attackers controlling the password to overwrite stack memory when opening AESV3/R6 encrypted PDFs. Attackers can supply a password longer than 127 bytes through applications using the libpoppler, libpoppler-glib or C++ API to overflow the K1 and E buffers, crashing the process or corrupting memory.
- Record
CVE-2026-107705- CVSS 4.0
- 8.3 High
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N - Weakness
- CWE-121
- Updated
- 2026-11-02
Show 7 moreShow less
OSVDEBIAN-CVE-2026-107705
Poppler 0.42.0 through 26.10.0 contains a stack-based buffer overflow in Decrypt::revision6Hash() that allows attackers controlling the password to overwrite stack memory when opening AESV3/R6 encrypted PDFs. Attackers can supply a password longer than 127 bytes through applications using the libpoppler, libpoppler-glib or C++ API to overflow the K1 and E buffers, crashing the process or corrupting memory.
- Record
DEBIAN-CVE-2026-107705- CVSS 4.0
- 8.3 High
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/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:X - Updated
- 2026-11-02
OSVRHSA-2026:80172
Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update
- Record
RHSA-2026:80172- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVRHSA-2026:80579
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
- Record
RHSA-2026:80579- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-107705
Poppler 0.42.0 through 26.10.0 contains a stack-based buffer overflow in Decrypt::revision6Hash() that allows attackers controlling the password to overwrite stack memory when opening AESV3/R6 encrypted PDFs. Attackers can supply a password longer than 127 bytes through applications using the libpoppler, libpoppler-glib or C++ API to overflow the K1 and E buffers, crashing the process or corrupting memory.
- Record
UBUNTU-CVE-2026-107705- CVSS 4.0
- 8.3 High
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H - Updated
- 2026-11-02
OSVCLSA-2026-1791810115 No score
poppler: Fix of CVE-2026-107705
- CVE-2026-107705: clamp the password to 127 bytes before passing it to revision6Hash in Decrypt::makeFileKey to prevent a stack buffer overflow
- Record
CLSA-2026-1791810115- Updated
- 2026-11-02
OSVopenSUSE-SU-2026:12145-1 No score
libpoppler-cpp3-26.10.0-1.1 on GA media
These are all security issues fixed in the libpoppler-cpp3-26.10.0-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2026:12145-1- Updated
- 2026-11-02
OSVUSN-8950-1 No score
poppler vulnerability
It was discovered that poppler incorrectly handled the password length limit when decrypting certain encrypted PDF files. An attacker could possibly use this issue to cause a denial of service.
- Record
USN-8950-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
popplerAlpaquita:23 |
22.11.0-r0 and later | None known |
popplerAlpaquita:25 |
25.04.0-r0 and later | None known |
popplerAlpaquita:stream |
23.03.0-r1 and later | None known |
popplerTuxCare:AlmaLinux:9.6 |
before 21.01.0-21.el9.tuxcare.els9 | 21.01.0-21.el9.tuxcare.els9 |
poppler-cppTuxCare:AlmaLinux:9.6 |
before 21.01.0-21.el9.tuxcare.els9 | 21.01.0-21.el9.tuxcare.els9 |
poppler-cpp-develTuxCare:AlmaLinux:9.6 |
before 21.01.0-21.el9.tuxcare.els9 | 21.01.0-21.el9.tuxcare.els9 |
poppler-develTuxCare:AlmaLinux:9.6 |
before 21.01.0-21.el9.tuxcare.els9 | 21.01.0-21.el9.tuxcare.els9 |
poppler-glibTuxCare:AlmaLinux:9.6 |
before 21.01.0-21.el9.tuxcare.els9 | 21.01.0-21.el9.tuxcare.els9 |
poppler-glib-develTuxCare:AlmaLinux:9.6 |
before 21.01.0-21.el9.tuxcare.els9 | 21.01.0-21.el9.tuxcare.els9 |
poppler-glib-docTuxCare:AlmaLinux:9.6 |
before 21.01.0-21.el9.tuxcare.els9 | 21.01.0-21.el9.tuxcare.els9 |
Show 34 moreShow less
| Package | Affected | Fixed |
|---|---|---|
poppler-qt5TuxCare:AlmaLinux:9.6 |
before 21.01.0-21.el9.tuxcare.els9 | 21.01.0-21.el9.tuxcare.els9 |
poppler-qt5-develTuxCare:AlmaLinux:9.6 |
before 21.01.0-21.el9.tuxcare.els9 | 21.01.0-21.el9.tuxcare.els9 |
poppler-utilsTuxCare:AlmaLinux:9.6 |
before 21.01.0-21.el9.tuxcare.els9 | 21.01.0-21.el9.tuxcare.els9 |
popplerDebian:12 |
All versions, plus listed versions 22.12.0-222.12.0-2+deb12u122.12.0-2+deb12u222.12.0-2+deb12u322.12.0-2.1 Show 41 moreShow less22.12.0-2.223.08.0-123.08.0-223.12.0-124.02.0-124.02.0-224.02.0-324.02.0-424.02.0-524.02.0-5+loong6424.06.0-124.06.0-224.08.0-124.08.0-224.08.0-324.08.0-425.01.0-125.01.0-225.01.0-325.01.0-425.01.0-525.03.0-125.03.0-1025.03.0-1125.03.0-11.125.03.0-225.03.0-325.03.0-425.03.0-525.03.0-625.03.0-725.03.0-926.01.0-126.01.0-226.01.0-326.01.0-426.01.0-4.126.01.0-526.07.0-126.07.0-226.07.0-3 |
None known |
popplerDebian:13 |
All versions, plus listed versions 25.03.0-1025.03.0-1125.03.0-11.125.03.0-525.03.0-5+deb13u2 Show 14 moreShow less25.03.0-5+deb13u325.03.0-5+deb13u425.03.0-625.03.0-725.03.0-926.01.0-126.01.0-226.01.0-326.01.0-426.01.0-4.126.01.0-526.07.0-126.07.0-226.07.0-3 |
None known |
popplerDebian:14 |
All versions, plus listed versions 25.03.0-1025.03.0-1125.03.0-11.125.03.0-525.03.0-6 Show 11 moreShow less25.03.0-725.03.0-926.01.0-126.01.0-226.01.0-326.01.0-426.01.0-4.126.01.0-526.07.0-126.07.0-226.07.0-3 |
None known |
popplerRed Hat:hummingbird:1 |
before 0:26.08.0-1.3.hum1 | 0:26.08.0-1.3.hum1 |
poppler-cppRed Hat:hummingbird:1 |
before 0:26.08.0-1.3.hum1 | 0:26.08.0-1.3.hum1 |
poppler-cpp-develRed Hat:hummingbird:1 |
before 0:26.08.0-1.3.hum1 | 0:26.08.0-1.3.hum1 |
poppler-develRed Hat:hummingbird:1 |
before 0:26.08.0-1.3.hum1 | 0:26.08.0-1.3.hum1 |
poppler-glibRed Hat:hummingbird:1 |
before 0:26.08.0-1.3.hum1 | 0:26.08.0-1.3.hum1 |
poppler-glib-develRed Hat:hummingbird:1 |
before 0:26.08.0-1.3.hum1 | 0:26.08.0-1.3.hum1 |
poppler-glib-docRed Hat:hummingbird:1 |
before 0:26.08.0-1.3.hum1 | 0:26.08.0-1.3.hum1 |
poppler-qt6Red Hat:hummingbird:1 |
before 0:26.08.0-1.3.hum1 | 0:26.08.0-1.3.hum1 |
poppler-qt6-develRed Hat:hummingbird:1 |
before 0:26.08.0-1.3.hum1 | 0:26.08.0-1.3.hum1 |
poppler-utilsRed Hat:hummingbird:1 |
before 0:26.08.0-1.3.hum1 | 0:26.08.0-1.3.hum1 |
popplerRed Hat:hummingbird:1 |
before 0:26.08.0-1.4.hum1 | 0:26.08.0-1.4.hum1 |
poppler-cppRed Hat:hummingbird:1 |
before 0:26.08.0-1.4.hum1 | 0:26.08.0-1.4.hum1 |
poppler-cpp-develRed Hat:hummingbird:1 |
before 0:26.08.0-1.4.hum1 | 0:26.08.0-1.4.hum1 |
poppler-develRed Hat:hummingbird:1 |
before 0:26.08.0-1.4.hum1 | 0:26.08.0-1.4.hum1 |
poppler-glibRed Hat:hummingbird:1 |
before 0:26.08.0-1.4.hum1 | 0:26.08.0-1.4.hum1 |
poppler-glib-develRed Hat:hummingbird:1 |
before 0:26.08.0-1.4.hum1 | 0:26.08.0-1.4.hum1 |
poppler-glib-docRed Hat:hummingbird:1 |
before 0:26.08.0-1.4.hum1 | 0:26.08.0-1.4.hum1 |
poppler-qt6Red Hat:hummingbird:1 |
before 0:26.08.0-1.4.hum1 | 0:26.08.0-1.4.hum1 |
poppler-qt6-develRed Hat:hummingbird:1 |
before 0:26.08.0-1.4.hum1 | 0:26.08.0-1.4.hum1 |
poppler-utilsRed Hat:hummingbird:1 |
before 0:26.08.0-1.4.hum1 | 0:26.08.0-1.4.hum1 |
popplerUbuntu:Pro:16.04:LTS |
All versions, plus listed versions 0.33.0-0ubuntu30.37.0-0ubuntu10.38.0-0ubuntu10.41.0-0ubuntu10.41.0-0ubuntu1.1 Show 23 moreShow less0.41.0-0ubuntu1.20.41.0-0ubuntu1.30.41.0-0ubuntu1.40.41.0-0ubuntu1.50.41.0-0ubuntu1.60.41.0-0ubuntu1.70.41.0-0ubuntu1.80.41.0-0ubuntu1.90.41.0-0ubuntu1.100.41.0-0ubuntu1.110.41.0-0ubuntu1.120.41.0-0ubuntu1.130.41.0-0ubuntu1.140.41.0-0ubuntu1.150.41.0-0ubuntu1.160.41.0-0ubuntu1.16+esm10.41.0-0ubuntu1.16+esm20.41.0-0ubuntu1.16+esm30.41.0-0ubuntu1.16+esm40.41.0-0ubuntu1.16+esm50.41.0-0ubuntu1.16+esm60.41.0-0ubuntu1.16+esm70.41.0-0ubuntu1.16+esm8 |
None known |
popplerUbuntu:Pro:18.04:LTS |
All versions, plus listed versions 0.57.0-2ubuntu40.57.0-2ubuntu50.62.0-1ubuntu10.62.0-2ubuntu10.62.0-2ubuntu2 Show 21 moreShow less0.62.0-2ubuntu2.10.62.0-2ubuntu2.20.62.0-2ubuntu2.40.62.0-2ubuntu2.50.62.0-2ubuntu2.60.62.0-2ubuntu2.70.62.0-2ubuntu2.80.62.0-2ubuntu2.90.62.0-2ubuntu2.100.62.0-2ubuntu2.110.62.0-2ubuntu2.120.62.0-2ubuntu2.130.62.0-2ubuntu2.140.62.0-2ubuntu2.14+esm10.62.0-2ubuntu2.14+esm20.62.0-2ubuntu2.14+esm30.62.0-2ubuntu2.14+esm40.62.0-2ubuntu2.14+esm50.62.0-2ubuntu2.14+esm60.62.0-2ubuntu2.14+esm70.62.0-2ubuntu2.14+esm8 |
None known |
popplerUbuntu:Pro:20.04:LTS |
All versions, plus listed versions 0.80.0-0ubuntu10.80.0-0ubuntu30.80.0-0ubuntu40.80.0-0ubuntu50.85.0-1ubuntu1 Show 12 moreShow less0.85.0-1ubuntu30.86.1-0ubuntu10.86.1-0ubuntu1.10.86.1-0ubuntu1.20.86.1-0ubuntu1.30.86.1-0ubuntu1.40.86.1-0ubuntu1.50.86.1-0ubuntu1.60.86.1-0ubuntu1.70.86.1-0ubuntu1.7+esm10.86.1-0ubuntu1.7+esm20.86.1-0ubuntu1.7+esm3 |
None known |
popplerUbuntu:22.04:LTS |
before 22.02.0-2ubuntu0.15, plus listed versions 21.06.1-121.11.0-1~ubuntu222.02.0-222.02.0-2ubuntu0.122.02.0-2ubuntu0.2 Show 12 moreShow less22.02.0-2ubuntu0.322.02.0-2ubuntu0.422.02.0-2ubuntu0.522.02.0-2ubuntu0.622.02.0-2ubuntu0.722.02.0-2ubuntu0.822.02.0-2ubuntu0.922.02.0-2ubuntu0.1022.02.0-2ubuntu0.1122.02.0-2ubuntu0.1222.02.0-2ubuntu0.1322.02.0-2ubuntu0.14 |
22.02.0-2ubuntu0.15 |
popplerUbuntu:24.04:LTS |
before 24.02.0-1ubuntu9.11, plus listed versions 23.08.0-2ubuntu123.12.0-1ubuntu224.02.0-1ubuntu224.02.0-1ubuntu824.02.0-1ubuntu9 Show 10 moreShow less24.02.0-1ubuntu9.124.02.0-1ubuntu9.224.02.0-1ubuntu9.324.02.0-1ubuntu9.424.02.0-1ubuntu9.524.02.0-1ubuntu9.624.02.0-1ubuntu9.724.02.0-1ubuntu9.824.02.0-1ubuntu9.924.02.0-1ubuntu9.10 |
24.02.0-1ubuntu9.11 |
popplerUbuntu:26.10 |
before 26.07.0-2ubuntu1.1, plus listed versions 26.01.0-2build226.01.0-526.07.0-0ubuntu126.07.0-226.07.0-2ubuntu1 |
26.07.0-2ubuntu1.1 |
popplerUbuntu:26.04:LTS |
before 26.01.0-2ubuntu0.3, plus listed versions 25.03.0-1025.03.0-11.126.01.0-2build226.01.0-2ubuntu0.126.01.0-2ubuntu0.2 |
26.01.0-2ubuntu0.3 |
poppleropenSUSE:Tumbleweed |
before 26.10.0-1.1 | 26.10.0-1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-107705 is a high vulnerability (CVSS 8.3) in Freedesktop Poppler, published October 8, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.32%, the 25th percentile. Fixed in poppler 21.01.0-21.el9.tuxcare.els9.
References
gitlab.freedesktop.org/poppler/poppler/-/work_items/1814
vulncheck.com/advisories/poppler-0.42.0-through-26.10.0-stack-buffer-overflow-via-decrypt-revision6hash
nvd.nist.gov/vuln/detail/CVE-2026-107705
Show 17 moreShow less
github.com/advisories/GHSA-939q-g65h-55jw
docs.bell-sw.com/security/cves/CVE-2026-107705
errata.tuxcare.com/els_os/tuxcare9.6esu/CLSA-2026-1791810115.html
security-tracker.debian.org/tracker/CVE-2026-107705
access.redhat.com/errata/RHSA-2026:80172
images.redhat.com
security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_80172.json
bugzilla.redhat.com/show_bug.cgi?id=2548222
cve.org/CVERecord?id=CVE-2026-107705
ubuntu.com/security/CVE-2026-107705
suse.com/security/cve/CVE-2026-107705