GHSA-9344-p847-qm5c
LOWLow severity (DoS) vulnerability in sequoia-openpgp
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
Blast Radius
sequoia-openpgpReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects crates.io packages — download data is not available via public APIs for these ecosystems.
Description
There is a denial-of-service vulnerability in sequoia-openpgp, our crate providing a low-level interface to our OpenPGP implementation. When triggered, the process will enter an infinite loop.
Many thanks to Andrew Gallagher for disclosing the issue to us.
Impact
Any software directly or indirectly using the interface sequoia_openpgp::cert::raw::RawCertParser. Notably, this includes all
software using the sequoia_cert_store crate.
Details
The RawCertParser does not advance the input stream when encountering unsupported cert (primary key) versions, resulting in an infinite loop.
The fix introduces a new raw-cert-specific cert::raw::Error::UnuspportedCert.
Affected software
- sequoia-openpgp 1.13.0
- sequoia-openpgp 1.14.0
- sequoia-openpgp 1.15.0
- sequoia-openpgp 1.16.0
- sequoia-openpgp 1.17.0
- sequoia-openpgp 1.18.0
- sequoia-openpgp 1.19.0
- sequoia-openpgp 1.20.0
- Any software built against a vulnerable version of sequoia-openpgp which is directly or indirectly using the interface sequoia_
openpgp::cert::raw::RawCertParser. Notably, this includes all software using thesequoia_cert_storecrate.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🦀crates.io | sequoia-openpgp | ≥ 1.13.0&&< 1.21.0 | 1.21.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for sequoia-openpgp. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update sequoia-openpgp to 1.21.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-9344-p847-qm5c is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-9344-p847-qm5c is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-9344-p847-qm5c. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-9344-p847-qm5c in your dependencies?
O3 detects GHSA-9344-p847-qm5c across crates.io dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.