GHSA-8h58-w33p-wq3g
rPGP affected by crash in message handling for deeply nested messages
GHSA-8h58-w33p-wq3g is a high vulnerability (CVSS 8.7) in pgp, published February 13, 2026. No source lists public exploit code. Fixed in pgp 0.19.0.
- Severity
- 8.7 HighCVSS 4.0, GitHub Advisories
- Exploit chance
- UnscoredNo EPSS score yet
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
0.19.0pgp
Description
Summary
Previous rPGP versions could be caused to crash with a "stack overflow" when parsing messages that contain deeply nested message layers, such as messages with many signatures.
rPGP 0.19.0 resolves this issue with a more robust message handling implementation (via https://github.com/rpgp/rpgp/pull/625).
Impact
An attacker could cause applications to crash in rPGP's message parsing subsystem, when applications attempt to ingest messages.
Attribution
Discovered internally during rPGP development, using a fuzz test suite previously contributed by Christian Reitter.
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
- None
- Availability
- High
Affected packages
| Package | Affected | Fixed |
|---|---|---|
pgpcrates.io | 0.16.0-alpha.0 up to 0.19.0 | 0.19.0 |
What each source reports
GitHub Advisories Score used
rPGP affected by crash in message handling for deeply nested messages
Summary
Previous rPGP versions could be caused to crash with a "stack overflow" when parsing messages that contain deeply nested message layers, such as messages with many signatures.
rPGP 0.19.0 resolves this issue with a more robust message handling implementation (via https://github.com/rpgp/rpgp/pull/625).
Impact
An attacker could cause applications to crash in rPGP's message parsing subsystem, when applications attempt to ingest messages.
Attribution
Discovered internally during rPGP development, using a fuzz test suite previously contributed by Christian Reitter.
- Record
GHSA-8h58-w33p-wq3g- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - Weakness
- CWE-121
- Updated
- 2026-11-02
OSV
rPGP affected by crash in message handling for deeply nested messages
Summary
Previous rPGP versions could be caused to crash with a "stack overflow" when parsing messages that contain deeply nested message layers, such as messages with many signatures.
rPGP 0.19.0 resolves this issue with a more robust message handling implementation (via https://github.com/rpgp/rpgp/pull/625).
Impact
An attacker could cause applications to crash in rPGP's message parsing subsystem, when applications attempt to ingest messages.
Attribution
Discovered internally during rPGP development, using a fuzz test suite previously contributed by Christian Reitter.
- Record
GHSA-8h58-w33p-wq3g- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - Weakness
- CWE-121
- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.