Vulnerability · Published Oct 13, 2026 · Assigned by VulnCheck

CVE-2026-110228wallabag 2.6.13 through 2.6.14 Stored XSS via Failed HTML Import Upload

Medium 5.4

In plain English

A medium-severity cross-site scripting in wallabag from wallabag. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).

Severity (CVSS 3.1)5.4Medium

Exploit odds (30 days)0.3%top 80.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

wallabag 2.6.13 through 2.6.14 contains a stored cross-site scripting vulnerability that allows authenticated users to host arbitrary HTML by triggering a failed Pocket HTML, Pocket CSV or Shaarli import. Attackers can upload an HTML file with script but no anchor elements, leaving it at the predictable /uploads/import/<user-id>.html path to execute script in victims' wallabag sessions.

Affected products (as reported)

Vendor	Product	Versions
wallabag	wallabag	2.6.13 – through 2.6.14

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

References

https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/wallabag-pocket-html-failed-import-stored-xss third-party-advisory
https://github.com/wallabag/wallabag/blob/74cbfd945bc316b5cf0308ba56e32fd2ed3443c0/src/Wallabag/ImportBundle/Controller/HtmlController.php#L28-L54 technical-description
https://github.com/wallabag/wallabag/blob/74cbfd945bc316b5cf0308ba56e32fd2ed3443c0/app/config/wallabag.yml#L169-L177 technical-description
https://github.com/wallabag/wallabag/blob/74cbfd945bc316b5cf0308ba56e32fd2ed3443c0/web/.htaccess#L50-L56 technical-description
https://github.com/wallabag/wallabag product
VulnCheck Advisory: wallabag 2.6.13 through 2.6.14 Stored XSS via Failed HTML Import Upload third-party-advisory