🛡️ GHSA-8h58-w33p-wq3g — pgp

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-121 OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. Rated impact: confidentiality none, integrity none, availability high.

Weakness class

GHSA-8h58-w33p-wq3g is classified as CWE-121: Stack-based Buffer Overflow. An oversized write to a stack buffer overwrites saved state such as return addresses, which can redirect execution.

Affected software

GHSA-8h58-w33p-wq3g is recorded against 1 package.

  • pgp

Timeline and source

Published on 13 February 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

github.com (Web)
github.com (Web)
github.com (Web)
github.com (Package)

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector 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
CWE CWE-121
Public Exploit ✅ No
Source OSV
Published 2026-02-13
Updated 2026-08-20
Modified 2026-02-13
Fix URL N/A

Affected Packages

Software From version Fixed in
pgp — —

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