CVE-2026-92973
ansi2html 1.7.0a0 through 1.9.3 Cross-Site Scripting via OSC 8
CVSS Score
6.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-79 |
| Vendor | pycontribs |
| Product | ansi2html |
| Published | Sep 17, 2026 |
Stay Ahead of the Next One
Get instant alerts for pycontribs ansi2html
Be the first to know when new medium vulnerabilities affecting pycontribs ansi2html are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
pycontribs / ansi2html
1.7.0a0 < 1.9.4
References
github.com: https://github.com/pycontribs/ansi2html/commit/89d1c231c60ac52005f3b21bbba551c786c554fc github.com: https://github.com/pycontribs/ansi2html/blob/v1.9.3/src/ansi2html/converter.py#L345-L349 github.com: https://github.com/pycontribs/ansi2html vulncheck.com: https://www.vulncheck.com/advisories/ansi2html-1.7-0a0-through-1.9.3-cross-site-scripting-via-osc-8
Credits
Arkadiusz Kozdra