CVE-2026-63156CWE-79cross-site-scripting

CVE-2026-63156

Medium · published October 14, 2026

CVSS v3.1
6.1
EPSS
0%
Percentile
21.8
In the wild
Unconfirmed
What it is

Omnispace Agora Project before 26.10.0 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious HTML attributes by manipulating the visioUrl parameter, which was not routed through the URL-sanitizing branch of the parameter filter and was urldecoded after filtering. Attackers can craft a malicious URL containing the visioUrl parameter with an attribute breakout payload to execute arbitrary JavaScript in the victim's browser pre-authentication, with the issue fixed in version 26.10.0 via changes to app/Common/Req.php.

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
5.1 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
EPSS
0.00303 · 21.8th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-10-14T01:17Z
References (3)
https://github.com/xech/agora-project/releases/tag/26.10 · [email protected]https://www.agora-project.net/ · [email protected]https://www.vulncheck.com/advisories/omnispace-agora-project-reflected-xss-via-visiourl-parameter · [email protected]
EPSS history
Timeline
  • 15 OCT 03:33Z
    EPSS moved — → 0%
    epss
  • 13 OCT 20:01Z
    Omnispace Agora Project < 26.10.0 Reflected XSS via visioUrl Parameter
    cvelistv5
  • 13 OCT 20:01Z
    Omnispace Agora Project < 26.10.0 Reflected XSS via visioUrl Parameter
    cvelistv5