CVE-2019-12760
A deserialization vulnerability exists in the way parso through 0.4.0 handles grammar parsing from the cache.
Does this matter?
Lower severity and a low EPSS score (1.53%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 3.3 LOWCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N
- EPSS
- 1.53% probability · 75th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-502
- Affected
- parso project/parso
- Source
- cve@mitre.org
EPSS 1.5% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://gist.github.com/dhondta/f71ae7e5c4234f8edfd2f12503a5dcc7Exploit, Third Party Advisory
- https://github.com/davidhalter/parso/issues/75
- https://gist.github.com/dhondta/f71ae7e5c4234f8edfd2f12503a5dcc7Exploit, Third Party Advisory
- https://github.com/davidhalter/parso/issues/75
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.