Cotonti 1.0.0 PHP Object Injection via Comments Plugin Edit Action cb Parameter
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.7epss 0.4%
exploitation probability
0.4%top 62% of all CVEs
observed exploitation
nono source reports it
Cotonti 1.0.0 passes the base64-decoded cb parameter to unserialize() without allowed_classes restriction in the comments plugin EditAction. Registered users with comment write permissions can instantiate arbitrary PHP objects and potentially achieve file write or code execution through gadget chains.
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
Cotonti · CotontiReferences
https://github.com/Cotonti/Cotontihttps://github.com/Cotonti/Cotonti/blob/1.0.0/plugins/comments/controllers/actions/EditAction.phphttps://github.com/Cotonti/Cotonti/blob/1.0.0/system/cache.phphttps://github.com/Cotonti/Cotonti/issues/1894https://github.com/Cotonti/Cotonti/pull/1897https://www.vulncheck.com/advisories/cotonti-1.0.0-php-object-injection-via-comments-plugin-edit-action-cb-parameter