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No exploitation reportedFix available

CVE-2021-43306

No exploitation reported by the sources we read.

  • Published2022-06-02
  • Fixed in1.19.4
  • WeaknessCWE-1333

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

An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the jquery-validation npm package, when an attacker is able to supply arbitrary input to the url2 method

Timeline

dates in UTC
  1. 2022-06-0214:15CVE publishedNVD

Versions per branch

NVD · OSV
Jqueryvalidation jquery validation
BranchAffectedFixed in
1.19< 1.19.41.19.4

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

  • civicrmUbuntu:Pro:22.04:LTSall versions · no fixed version listed
  • civicrmUbuntu:Pro:20.04:LTSall versions · no fixed version listed
  • civicrmUbuntu:Pro:18.04:LTSall versions · no fixed version listed
  • civicrmUbuntu:Pro:16.04:LTSall versions · no fixed version listed
  • jquery-validationTuxCare:npmfrom 1.19.0-tuxcare.0 · fixed in 1.19.0-tuxcare.1

Full record on NVD

Fix

  1. Update Jqueryvalidation jquery validation to 1.19.4

Detection

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

Sources

  • CNACVSS 3.15.9known since 2026-10-23
  • NVDCVSS 3.17.5read 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • CNAweakness (CWE)CWE-1333known since 2026-10-23
  • NVDweakness (CWE)CWE-1333read 2026-10-23
  • FIRST EPSSEPSS score1.5 %2026-11-08
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryLOW2022-06-03

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
2022-06-02
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-j9m2-h2pv-wvph

Frequently asked questions

What is CVE-2021-43306?

An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the jquery-validation npm package, when an attacker is able to supply arbitrary input to the url2 method

Is CVE-2021-43306 actively exploited?

Active exploitation of CVE-2021-43306 has not been confirmed. Its EPSS score was 1.5% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-43306?

CVE-2021-43306 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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