CVE-2026-92973CWE-79cross-site-scripting

CVE-2026-92973

Medium · published September 17, 2026

CVSS v3.1
6.1
EPSS
0%
Percentile
32.3
In the wild
Unconfirmed
What it is

ansi2html versions 1.7.0a0 through 1.9.3 contain a cross-site scripting vulnerability in OSC 8 hyperlink handling that fails to validate or escape URL targets. Attackers controlling ANSI text input can inject javascript: schemes or terminate href attributes to execute arbitrary scripts in the context of pages displaying converted output.

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
5.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
EPSS
0.00393 · 32.3th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-09-17T18:18Z
References (4)
https://github.com/pycontribs/ansi2html · [email protected]https://github.com/pycontribs/ansi2html/blob/v1.9.3/src/ansi2html/converter.py#L345-L349 · [email protected]https://github.com/pycontribs/ansi2html/commit/89d1c231c60ac52005f3b21bbba551c786c554fc · [email protected]https://www.vulncheck.com/advisories/ansi2html-1.7-0a0-through-1.9.3-cross-site-scripting-via-osc-8 · [email protected]
EPSS history
Timeline
  • 19 SEP 03:55Z
    EPSS moved — → 0%
    epss
  • 17 SEP 13:43Z
    ansi2html 1.7.0a0 through 1.9.3 Cross-Site Scripting via OSC 8
    cvelistv5