Contao possible cookie sharing with external domains while checking protected pages for broken links
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.4epss 0.7%
exploitation probability
0.7%top 50% of all CVEs
observed exploitation
nono source reports it
Contao is an open source content management system. Starting in version 4.9.0 and prior to versions 4.13.40 and 5.3.4, when checking for broken links on protected pages, Contao sends the cookie header to external urls as well, the passed options for the http client are used for all requests. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, disable crawling protected pages.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Affected products
contao · contaoReferences
https://contao.org/en/security-advisories/session-cookie-disclosure-in-the-crawlerhttps://github.com/contao/contao/blob/14e9ef4bc8b82936ba2d0e04164581145a075e2a/core-bundle/src/Resources/contao/classes/Crawl.php#L129https://github.com/contao/contao/commit/73a2770e2d3535ec9f1b03d54be00e56ebb8ff16https://github.com/contao/contao/commit/79b7620d01ce8f46ce2b331455e0d95e5208de3dhttps://github.com/contao/contao/security/advisories/GHSA-9jh5-qf84-x6pr