PraisonAI before 1.6.78 SSRF via Crawl4AI Chromium backend

published 2026-07-11 3 mo ago modified 2026-10-25 14 d ago also GHSA-6g59-gm2v-qhvq , PYSEC-2026-4269 , EUVD-2026-43178

cvss: 8.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 19%
public exploits: 0; none known

PraisonAI versions before 1.6.78 contain a server-side request forgery vulnerability in the Crawl4AI/Chromium backend that allows attackers to bypass SSRF validation by exploiting DNS rebinding and HTTP redirects. Attackers can craft URLs that resolve to internal services after the initial validation check, enabling the headless browser to follow redirects and read internal responses including sensitive canary values.

Patch / fix

fixed in 2

pypi praisonaiagents 1.6.78
MervinPraison PraisonAI 1.6.78

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 3 mo ago (2026-07-13)

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-6g59-gm2v-qhvq referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	8.4	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N
CNA	3.1	8.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
CNA	4.0	8.4	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/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	8.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
GitHub	3.1	8.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
pypi	praisonaiagents	<1.6.78	1.6.78

Affected products

MervinPraison PraisonAI

Classification

Weakness

CWE-918 Server-Side Request Forgery
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

References

github.com /MervinPraison/PraisonAI/security/advisories/GHSA-6g59-gm2v-qhvq
vendor-advisory, exploit, web
vulncheck.com /advisories/praisonai-before-ssrf-via-crawl4ai-chromium-backend
third-party-advisory, web
nvd.nist.gov /vuln/detail/CVE-2026-61429
advisory
github.com /MervinPraison/PraisonAI
package
pypi.org /project/praisonaiagents
package
github.com /advisories/GHSA-6g59-gm2v-qhvq
advisory

Sources

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.

Summary