No exploitation reportedFix available

CVE-2018-17199

No exploitation reported by the sources we read.

Published2019-01-30
WeaknessCWE-384

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

In Apache HTTP Server 2.4 release 2.4.37 and prior, mod_session checks the session expiry time before decoding the session. This causes session expiry time to be ignored for mod_session_cookie sessions since the expiry time is loaded when the session is decoded.

Timeline

dates in UTC

2019-01-3022:29CVE publishedNVD
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-17199?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-17199?format=csv
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Versions per branch

NVD

Canonical ubuntu linux

Branch	Affected	Fixed in	Source
14.4	= 14.04	no fix published	NVD
16.4	= 16.04	no fix published	NVD
18.4	= 18.04	no fix published	NVD
18.10	= 18.10	no fix published	NVD

Debian debian linux

Branch	Affected	Fixed in	Source
8.0	= 8.0	no fix published	NVD
9.0	= 9.0	no fix published	NVD

Apache HTTP Server

Branch	Affected	Fixed in	Source
2.4	≥ 2.4.0, ≤ 2.4.37	no fix published	NVD

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

mod_http2AlmaLinux:8all versions · fixed in 1.15.7-3.module_el8.5.0+2609+b30d9eec
mod_mdAlmaLinux:8all versions · fixed in 1:2.0.8-8.module_el8.5.0+2609+b30d9eec
mod_mdAlmaLinux:8all versions · fixed in 1:2.0.8-8.module_el8.6.0+2872+fe0ff7aa

Full record on NVD

Fix

Advisories and patches

httpd.apache.orgVendor Advisory
www.oracle.comPatch

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.07.5read 2026-10-23
NVDCVSS 2.05read 2026-10-23
NVDweakness (CWE)CWE-384read 2026-10-23
FIRST EPSSEPSS score20.2 %read 2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Published: 2019-01-30
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2018-17199?

Is CVE-2018-17199 actively exploited?

Active exploitation of CVE-2018-17199 has not been confirmed. Its EPSS score was 20.2% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-17199?

CVE-2018-17199 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

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