CVE-2019-9710
unknown
CVSS v3
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CVSS v4 NEW
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VIR risk
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Description
An issue was discovered in webargs before 5.1.3, as used with marshmallow and other products. JSON parsing uses a short-lived cache to store the parsed JSON body. This cache is not thread-safe, meaning that incorrect JSON payloads could have been parsed for concurrent requests.
Predictions
Exploit likelihood
30%
Patch ETA
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Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| PyPI | webargs | <5.1.3 | 5.1.3 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2019-9710
- https://github.com/marshmallow-code/webargs/issues/371
- https://github.com/marshmallow-code/webargs/pull/373
- https://github.com/marshmallow-code/webargs/commit/716bd8d1f24c84aaf99170efaa17d1d34206f6c0
- https://github.com/marshmallow-code/webargs
- https://github.com/pypa/advisory-database/tree/main/vulns/webargs/PYSEC-2019-139.yaml
- https://webargs.readthedocs.io/en/latest/changelog.html
- https://webargs.readthedocs.io/en/latest/changelog.html#id24
- https://github.com/advisories/GHSA-8554-jxcw-454q
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.