CVE catalog
CVE-2023-4639
DEBIAN-
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
- Unknown · CVSS 7.4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 1.09% · Oct 27, 2026
Reported versions and fixes
Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.
Version impact has not been established. The original provider fields are retained below.
Provider details and historical evidence
Original provider fields
{
"package_releases": [],
"fixed_versions": [],
"distribution_packages": [
{
"name": "undertow",
"distro": "debian",
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.3.18-1"
}
]
}
],
"release": "14",
"versions": [
"1.3.11-1",
"1.3.16-1",
"1.3.19-1",
"1.3.21-1",
"1.3.23-1",
"1.3.4-1",
"1.3.5-1",
"1.3.7-1",
"1.4.0-1",
"1.4.1-1",
"1.4.18-1",
"1.4.20-1",
"1.4.21-1",
"1.4.21-2",
"1.4.22-1",
"1.4.23-1",
"1.4.23-2",
"1.4.23-3",
"1.4.25-1",
"1.4.25-2",
"1.4.3-1",
"1.4.4-1",
"1.4.6-1",
"1.4.7-1",
"1.4.8-1",
"2.0.23-1",
"2.0.25-1",
"2.0.26-1",
"2.0.27-1",
"2.0.28-1",
"2.0.29-1",
"2.0.30-1",
"2.1.0-1",
"2.1.1-1",
"2.1.3-1",
"2.2.0-1",
"2.2.10-1",
"2.2.12-1",
"2.2.13-1",
"2.2.14-1",
"2.2.16-1",
"2.2.17-1",
"2.2.18-1",
"2.2.19-1",
"2.2.2-1",
"2.2.20-1",
"2.2.21-1",
"2.2.3-1",
"2.2.4-1",
"2.2.5-1",
"2.2.8-1",
"2.3.8-1",
"2.3.8-2"
],
"ecosystem": "deb",
"fixed_version": "2.3.18-1",
"provider_record_id": "DEBIAN-CVE-2023-4639"
}
]
}OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
Observed: