CVE-2026-57120 json
PraisonAI: execute_code sandbox bypass: str.format C-level attribute access reads every blocklisted dunder
published 2026-06-18 4 mo ago modified 2026-09-16 54 d ago also EUVD-2026-77541 , GHSA-pv2j-rghr-v5r9 , PYSEC-2026-3533
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 46%
- public exploits
- 0
- none known
Summary
PraisonAI is a multi-agent teams system. Prior to praisonaiagents 1.6.59, execute_code sandbox mode permits runtime assembly of blocklisted dunder names and allows str.format or str.format_map to resolve dotted fields through C-level attribute access that bypasses _safe_getattr. This exposes class, qualified-name, base-class, globals, and object-dictionary attributes to prompt-influenced code when approval is automatically granted, producing a high-impact read primitive without establishing a complete in-process execution chain. This issue is fixed in praisonaiagents 1.6.59.
Patch / fix
- pypi praisonaiagents 1.6.59
- praison praisonaiagents 1.6.59
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 54 d ago
Exploit prediction
0.56% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-pv2j-rghr-v5r9 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| GitHub | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| OSV | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | praisonaiagents | <1.6.59 |
1.6.59 |
Affected products
- MervinPraison praisonaiagents
Classification
- Weakness
-
- CWE-693 Protection Mechanism Failure
References
- github.com /MervinPraison/PraisonAI/commit/2adfe7e8323f6deec66925cf15a885b6238895e9
-
github.com
/MervinPraison/PraisonAI/security/advisories/GHSA-pv2j-rghr-v5r9
exploit, web
- github.com /MervinPraison/PraisonAI/releases/tag/v4.6.59
-
github.com
/MervinPraison/PraisonAI
package
-
pypi.org
/project/praisonaiagents
package
-
github.com
/advisories/GHSA-pv2j-rghr-v5r9
advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-57120
advisory
Sources
- CVE List CVE-2026-57120
- GitHub Advisory GHSA-pv2j-rghr-v5r9
- NVD CVE-2026-57120
- OSV PYSEC-2026-3533
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.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.