CVE-2025-65858: A Stored Cross-Site Scripting (XSS) vulnerability in Calibre-Web v0.6.25 allows attackers to inject malicious JavaScript into the 'username' field during user…

PriorityP415low3.5CVSS 3.1

AVNACLPRHUIRSUCLILAN

EPSS

0.17%

6.3th percentile

A Stored Cross-Site Scripting (XSS) vulnerability in Calibre-Web v0.6.25 allows attackers to inject malicious JavaScript into the 'username' field during user creation. The payload is stored unsanitized and later executed when the /ajax/listusers endpoint is accessed.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
calibreweb	calibreweb	0 – 0.6.25	—
janeczku	calibre-web	—	—

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.