CVE-2026-92973 PUBLISHED

ansi2html 1.7.0a0 through 1.9.3 Cross-Site Scripting via OSC 8

Assigner: VulnCheck
Reserved: 17.09.2026 Published: 17.09.2026 Updated: 17.09.2026

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.

CVSS Vector: 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
CVSS Score: 5.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	Low	Confidentiality	Low
Attack Complexity	Low	Integrity	Low	Integrity	Low
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	None
User Interaction	Passive

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS Score: 6.1

Attack Vector	Network	Scope	Changed
Attack Complexity	Low	Confidentiality Impact	Low
Privileges Required	None	Integrity Impact	Low
User Interaction	Required	Availability Impact	None

CVSS 3.1

Product Status

Vendor	pycontribs
Product	ansi2html
Versions	Default: unaffected affected from 1.7.0a0 to 1.9.4 (excl.)

Credits

Arkadiusz Kozdra finder

References

Problem Types

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') CWE