CVE-2026-53873 json
picklescan - Arbitrary Code Execution via profile.run() Blocklist Bypass
published 2026-03-03 8 mo ago modified 2026-11-08 20 h ago also EUVD-2026-37739 , GHSA-7wx9-6375-f5wh , PYSEC-2026-455
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 40%
- public exploits
- 0
- none known
Summary
picklescan before 1.0.4 contains an incomplete blocklist for the profile module that fails to block the module-level profile.run() function, allowing attackers to achieve arbitrary code execution via exec(). Attackers can craft malicious pickle files calling profile.run(statement) to execute arbitrary Python code while picklescan reports zero security issues.
Patch / fix
- pypi picklescan 1.0.4
- picklescan picklescan 1.0.4
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- total
- Assessed
- 4 mo ago
Exploit prediction
0.46% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/mmaitre314/picklescan/security/advisories/GHSA-7wx9-6375-f5wh referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 4.0 | 9.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| OSV | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | picklescan | <1.0.4 |
1.0.4 |
Affected products
- picklescan picklescan
Classification
References
-
github.com
/mmaitre314/picklescan/security/advisories/GHSA-7wx9-6375-f5wh
vendor-advisory, exploit, web
-
vulncheck.com
/advisories/picklescan-arbitrary-code-execution-via-profile-run-blocklist-bypass
third-party-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2026-53873
advisory
-
github.com
/mmaitre314/picklescan
package
-
pypi.org
/project/picklescan
package
-
github.com
/advisories/GHSA-7wx9-6375-f5wh
advisory
Sources
- CVE List CVE-2026-53873
- GitHub Advisory GHSA-7wx9-6375-f5wh
- NVD CVE-2026-53873
- OSV PYSEC-2026-455
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.