Dashboard / CVE-2026-10585

CVE-2026-10585

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 53/100
Published: 2026-06-30 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: Passive
S: X
AT: None
VC: Low
VI: Low
VA: None

Description

A stored cross-site scripting vulnerability was identified in GitHub Enterprise Server that allowed an authenticated attacker to execute arbitrary JavaScript in another user's browser by injecting a crafted payload into the title of a Discussion in the Q&A category. The AnsweredQuestionStructuredDataComponent did not escape user-controlled Discussion titles before embedding them in a <script type="application/ld+json"> block, allowing the title to break out of the script context. The injection was escalated to a full cross-site scripting attack on GitHub Enterprise Server by leveraging JSONP callback support in the REST API to bypass the Content Security Policy. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.20.4, 3.19.8, 3.18.11, 3.17.17, 3.16.20. This vulnerability was reported via the GitHub Bug Bounty program.

Weakness Classification (1)

Affected Software (5)

VendorProductVersion
github enterprise_server < 3.16.20
github enterprise_server 3.17.0 – 3.17.17
github enterprise_server 3.18.0 – 3.18.11
github enterprise_server 3.19.0 – 3.19.8
github enterprise_server 3.20.0 – 3.20.4

References & Advisories (5)

Bug Bounty Relevance

53 / 100
✓ Network accessible
✓ Low complexity

CVSS Score

6.3 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.32%
Raw Score 0.003200
Percentile 25.0%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00320
2026-10-28
0.00320

Intelligence Sources

nvd ref →

External Links