Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2020-26287

26
FAUCET Score

CVE-2020-26287 is a cross-site scripting (XSS) vulnerability affecting HedgeDoc versions prior to 1.7.1, allowing attackers to inject arbitrary script tags via mermaid diagrams. This vulnerability has a CVSS score of 8.7 (High) due to its network-based attack vector, low attack complexity, and high impact on confidentiality and integrity, potentially leading to arbitrary JavaScript execution. While the EPSS score is low, indicating a low probability of exploitation, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.7.1CPE matchmatch criteria
cpe:2.3:a:hedgedoc:hedgedoc:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.7HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
5.8
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.45%
Probability of exploitation in next 30 days
EPSS Percentile
70.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0145 is in the 87th percentile among its peer group of 890 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / Alemmi/ctf-writeups/blob/main/hxpctf-2020/hackme/solution.md
ExploitThird Party Advisory
github.com / hackmdio/codimd/issues/1630
Third Party Advisory
github.com / hedgedoc/hedgedoc/commit/58276ebbf4504a682454a3686dcaff88bc1069d4
PatchThird Party Advisory
github.com / hedgedoc/hedgedoc/releases/tag/1.7.1
Third Party Advisory
github.com / hedgedoc/hedgedoc/security/advisories/GHSA-g6w6-7xf9-m95p
Third Party Advisory