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No exploitation reportedFix available

CVE-2020-7760

No exploitation reported by the sources we read.

  • Published2020-10-30
  • Fixed in5.58.2
  • WeaknessCWE-400

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

This affects the package codemirror before 5.58.2; the package org.apache.marmotta.webjars:codemirror before 5.58.2. The vulnerable regular expression is located in https://github.com/codemirror/CodeMirror/blob/cdb228ac736369c685865b122b736cd0d397836c/mode/javascript/javascript.jsL129. The ReDOS vulnerability of the regex is mainly due to the sub-pattern (s|/*.*?*/)*

Timeline

dates in UTC
  1. 2020-10-3011:15CVE publishedNVD

Versions per branch

NVD · OSV
Codemirror
BranchAffectedFixed in
5.58< 5.58.25.58.2
Oracle application express
BranchAffectedFixed in
20.2< 20.220.2
Oracle enterprise manager express user interface
BranchAffectedFixed in
19.x= 19cno fix published

3 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • codemirror-jsUbuntu:20.04:LTSall versions · no fixed version listed
  • codemirror-jsUbuntu:18.04:LTSall versions · no fixed version listed
  • codemirror-jsUbuntu:16.04:LTSall versions · no fixed version listed
  • codemirror-jsDebian:14all versions · fixed in 5.58.2+~cs0.23.101-1
  • codemirror-jsDebian:13all versions · fixed in 5.58.2+~cs0.23.101-1
  • codemirror-jsDebian:12all versions · fixed in 5.58.2+~cs0.23.101-1
  • codemirror-jsDebian:10all versions · fixed in 5.43.0-1+deb10u1

Vendor advisories

  • CVE-2020-7760 Red Hat Product Security2 known affected

    codemirror: ReDoS in tokenBase function in javascript.js

    angular-codemirror as a component of Red Hat Ansible Tower 3 · codemirror as a component of Red Hat Ansible Tower 3

Full record on NVD

Fix

  1. Update Codemirror to 5.58.2
  2. No fix planned, says the vendor Red Hat Product Security CVE-2020-7760 · 2 productsWill not fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CNACVSS 3.15.3known since 2026-10-23
  • NVDCVSS 3.17.5read 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • NVDweakness (CWE)CWE-400read 2026-10-23
  • FIRST EPSSEPSS score5.3 %2026-11-08
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryMODERATE2021-04-21

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2020-10-30
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-4gw3-8f77-f72c

Frequently asked questions

What is CVE-2020-7760?

This affects the package codemirror before 5.58.2; the package org.apache.marmotta.webjars:codemirror before 5.58.2. The vulnerable regular expression is located in https://github.com/codemirror/CodeMirror/blob/cdb228ac736369c685865b122b736cd0d397836c/mode/javascript/javascript.jsL129. The ReDOS vulnerability of the regex is mainly due to the sub-pattern (s|/*.*?*/)*

Is CVE-2020-7760 actively exploited?

Active exploitation of CVE-2020-7760 has not been confirmed. Its EPSS score was 5.3% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-7760?

CVE-2020-7760 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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