CVE-2019-12760
A deserialization vulnerability exists in the way parso through 0.4.0 handles grammar parsing from the cache. Cache loading relies on…
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
A deserialization vulnerability exists in the way parso through 0.4.0 handles grammar parsing from the cache. Cache loading relies on pickle and, provided that an evil pickle can be written to a cache grammar file and that its parsing can be triggered, this flaw leads to Arbitrary Code Execution. NOTE: This is disputed because "the cache directory is not under control of the attacker in any common configuration.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: a proof of concept is public.
Timeline
ID reserved
By mitre
Published
- 5 years later
· 5 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Low3.3 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N |
| NVDNVD · Modified | 3.1 | Low3.3 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 1.5% · top 25% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 3.3.
Weakness
Affected products
n/a
- affected n/a
References (2)
- https://gist.github.com/dhondta/f71ae7e5c4234f8edfd2f12503a5dcc7 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/davidhalter/parso/issues/75 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2019-12760)Record last updated .