TI-2025-27540 Aliases CVE-2025-41355 GHSA-hvcr-3gq9-w43p

Reflected Cross-Site Scripting on Anon Proxy Server

LOW 23CWE-79Published 2026-03-31 · Updated 2026-03-31

Key facts

Attack vector: Network
Privileges required: None
User interaction: Active
Attack complexity: Low
Attack requirements: None
Impact type: Cross-site scripting
Confidentiality · integrity · availability: None · None · None
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

Reflected Cross-Site Scripting (XSS) vulnerability in Anon Proxy Server v0.104. This vulnerability allows an attacker to execute JavaScript code in the victim's browser by sending him/her a malicious URL. This vulnerability can be exploited to steal sensitive user data, such as session cookies, or to perform actions on behalf of the user. It affects 'port' and 'proxyPort' parameters in '/anon.php' endpoint.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00201 10th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Anon Proxy Server	Anon Proxy Server	0.104	—	No fix listed	CNA

Anon Proxy Server VendorAnon Proxy Server Affected 0.104 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:anonproxyserver:anon_proxy_server:0.104:::::::*	0.104	Vulnerable	Anonproxyserver

cpe:2.3:a:anonproxyserver:anon_proxy_server:0.104:*:*:*:*:*:*:* Versions 0.104 Vulnerable ·Anonproxyserver

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2025-41355
2026-10-03 Alias added: GHSA-hvcr-3gq9-w43p

References

Advisory 1

https://www.incibe.es/en/incibe-cert/notices/aviso/reflected-cross-site-scripting-xss-anon-proxy-server

TI-2007-06156 Anon Proxy Server 0.100, and probably 0.101, allows remote attackers to execute arbitrary… CVSS 2.0MEDIUM 6.8
TI-2008-00603 Buffer overflow in Anon Proxy Server 0.102 and earlier, when user authentication is… CVSS 2.0MEDIUM 6.0
TI-2025-27542 Reflected Cross-Site Scripting on Anon Proxy Server CVSS 4.0MEDIUM 5.1
TI-2025-27541 Reflected Cross-Site Scripting in Anon Proxy Server CVSS 4.0MEDIUM 5.1
TI-2007-06157 Multiple cross-site scripting (XSS) vulnerabilities in Anon Proxy Server before 0.101… CVSS 2.0MEDIUM 4.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences