rPGP affected by crash in message handling for deeply nested messages
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
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- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from GitHub.
Summary
### 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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | pgp (crates.io) | 0.16.0-alpha.0 to before 0.19.0 | 0.19.0 | Patch available | GHSA-8h58-w33p-wq3g |
- pgp (crates.io) Vendor— Affected 0.16.0-alpha.0 to before 0.19.0 Fixed in 0.19.0 Patch available GHSA-8h58-w33p-wq3g
Remediation
- Fix · GHSA-8h58-w33p-wq3g pgp (crates.io) Fixed in 0.19.0 Advisory →
Timeline
- 2026-10-03 Threatist record created from GHSA-8h58-w33p-wq3g
References
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences