Shaarli allows reflected XSS via searchtags parameter

published 2025-08-18 14 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-28587

cvss: 7.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 16%
public exploits: 0; none known

Shaarli is a minimalist bookmark manager and link sharing service. Prior to 0.15.0, the input string in the cloud tag page is not properly sanitized. This allows the </title> tag to be prematurely closed, leading to a reflected Cross-Site Scripting (XSS) vulnerability. This vulnerability is fixed in 0.15.0.

Patch / fix

fixed in 1 distros 1 links 1

shaarli_project shaarli 0.15.0

shaarli Debian 12 0.12.1+dfsg-8+deb12u1
shaarli Debian 13 0.14.0+dfsg-2

debian advisories DEBIAN-CVE-2025-55291

github.com/shaarli/Shaarli@66faa61 commit

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 14 mo ago (2025-08-18)

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.1	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Affected products

shaarli Shaarli

Classification

Weakness

CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page
CWE-87 Improper Neutralization of Alternate XSS Syntax
CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

CVE List CVE-2025-55291
NVD CVE-2025-55291

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