CVE-2025-65858
Calibre-Web Has a Stored Cross-Site Scripting (XSS) Vulnerability via the 'username' Field During User Creation
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2025-65858- CVSS 3.1
- 3.5 Low
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2025-200242
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.
- Record
EUVD-2025-200242- CVSS 3.1
- 3.5 Low
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-pc5g-j9j7-p4q3
Calibre-Web Has a Stored Cross-Site Scripting (XSS) Vulnerability via the 'username' Field During User Creation
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.
- Record
GHSA-pc5g-j9j7-p4q3- CVSS 4.0
- 1.9 Low
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P - Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2025-65858- CVSS 3.1
- 3.5 Low
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-05
OSV
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.
- Record
CVE-2025-65858- CVSS 3.1
- 3.5 Low
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N - Updated
- 2026-11-05
OSVGHSA-pc5g-j9j7-p4q3
Calibre-Web Has a Stored Cross-Site Scripting (XSS) Vulnerability via the 'username' Field During User Creation
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.
- Record
GHSA-pc5g-j9j7-p4q3- CVSS 4.0
- 1.9 Low
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P - Weakness
- CWE-79
- Updated
- 2026-11-02
OSVPYSEC-2026-1234
Calibre-Web Has a Stored Cross-Site Scripting (XSS) Vulnerability via the 'username' Field During User Creation
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.
- Record
PYSEC-2026-1234- CVSS 4.0
- 1.9 Low
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
calibrewebPyPI |
through 0.6.25 | None known |
calibrewebPyPI |
through 0.6.25, plus listed versions 0.6.120.6.130.6.140.6.150.6.16 Show 8 moreShow less0.6.170.6.180.6.190.6.200.6.210.6.220.6.230.6.24 |
None known |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | KhanhDuy155/calibre-web-CVE-2025-65858 | 2025-11-14 |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | NVD | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-65858 is a low vulnerability (CVSS 3.5) in Janeczku Calibre-web, published December 2, 2025. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.22%, the 12th percentile. No source names a fixed version.