CVE-2026-93546: Integer overflow in mod_dav_fs in Apache HTTP Server through 2.4.68 allows an authenticated WebDAV client with

Q: How do I fix CVE-2026-93546?

http server: upgrade to 2.4.69. Exact commands for each OS are on this page.

Q: Is CVE-2026-93546 being exploited?

CVE-2026-93546 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-93546 affect?

CVE-2026-93546 affects http server. Severity is high (CVSS 8.8). Integer overflow in mod_dav_fs in Apache HTTP Server through 2.4.68 allows an authenticated WebDAV client with write access to crash worker processes and persistently corrupt a directory's property database via PROPPATCH requests declaring

Q: How urgent is CVE-2026-93546?

Priority 45/100. High severity; On your watchlist

This month

HIGH 8.8WATCHLISTUPGRADE

CVE-2026-93546 is a high-severity flaw (CVSS 8.8) affecting http server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Integer overflow in mod_dav_fs in Apache HTTP Server through 2.4.68 allows an authenticated WebDAV client with write access to crash worker processes and persistently corrupt a directory's property database via PROPPATCH requests declaring many XML namespaces.

Why this priority

High severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 63%)
CISA exploited list	No
Weakness	CWE-190
Published	2026-10-01
Last modified	2026-10-05

Publisher (CNA): Apache Software Foundation · Vendor: apache

Last updated 2026-10-05 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-10-01 17:17 UTCPublished CVE record published
2026-10-05 16:05 UTCUpdated Record last modified

apache http server UPGRADE

Affected: < 2.4.69

Fixed in: 2.4.69

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy http-server || rpm -q http-server || http-server --version

2. UPGRADE to 2.4.69 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade http-server

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade http-server

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-93546?

http server: upgrade to 2.4.69. Exact commands for each OS are on this page.

Is CVE-2026-93546 being exploited?

CVE-2026-93546 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-93546 affect?

CVE-2026-93546 affects http server. Severity is high (CVSS 8.8). Integer overflow in mod_dav_fs in Apache HTTP Server through 2.4.68 allows an authenticated WebDAV client with write access to crash worker processes and persistently corrupt a directory's property database via PROPPATCH requests declaring

How urgent is CVE-2026-93546?

Priority 45/100. High severity; On your watchlist

Software pages

Apache HTTP Server vulnerabilities

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References

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