Apache Roller: Server-side request forgery via entry trackback and enclosure URLs

published 2026-09-28 42 d ago modified 2026-09-28 42 d ago also EUVD-2026-88136

cvss: 7.4; 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 21%
public exploits: 0; none known

Server-Side Request Forgery (SSRF) in Apache Roller 6.1.5 allows an authenticated user with entry-editing rights on a weblog to cause outbound HTTP requests to attacker-chosen destinations through legacy outbound Trackback and entry enclosure handling. The Trackback control is hidden in the standard UI, but its action remains directly reachable; the enclosure path is relevant only when an author supplies an enclosure URL. No non-default server configuration is required, and the default empty Trackback allow-list permits all destinations. Requests can reach loopback and private-network addresses, while enclosure handling exposes response status, content type, and length. Users are recommended to upgrade to Apache Roller 6.1.6 or later, which removes the outbound trackback action and stops dereferencing enclosure URLs.

Patch / fix

fixed in 1 links 2

apache roller 6.1.6

github.com/apache/roller#175 pull request
github.com/apache/roller#163 pull request

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 42 d ago (2026-09-28)

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L

Affected products

Apache Software Foundation Apache Roller

Classification

Weakness

CWE-918 Server-Side Request Forgery

References

github.com /apache/roller/pull/175
patch
github.com /apache/roller/pull/163
patch
lists.apache.org /thread/0p7kc0rjcpj3rf00cp96zfkfrz0ns4ny
vendor-advisory
openwall.com /lists/oss-security/2026/09/25/8

Sources

CVE List CVE-2026-82375
NVD CVE-2026-82375

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.

Summary