cve.bz

CVE-2023-4639

7.4 highEPSS 1.1%

High (7.4). EPSS 1.1% chance of exploitation in the next 30 days. Fixed in io.undertow:undertow-core 2.2.30.Final, 2.3.11.Final.

A flaw was found in Undertow, which incorrectly parses cookies with certain value-delimiting characters in incoming requests. This issue could allow an attacker to construct a cookie value to exfiltrate HttpOnly cookie values or spoof arbitrary additional cookie values, leading to unauthorized data access or modification. The main threat from this flaw impacts data confidentiality and integrity.

Severity

CVSS 3.1

7.4 high
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS
1.1% chance of exploitation in the next 30 days; higher than 65% of CVEs (scores of 2026-10-31)
CWE
CWE-444
Published
Modified
Record from
the NVD, synced

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-3jrv-jgp8-45v3Mavenio.undertow:undertow-core>=2.3.0.Alpha1 <2.3.11.Final2.3.11.Final
GHSA-3jrv-jgp8-45v3Mavenio.undertow:undertow-core<2.2.30.Final2.2.30.Final

References

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