Trending
CVE-2026-29169

CVE detail

CVE-2026-29169

A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or mod_dav_fs. The only known use-case for mod_dav_lock was mod_dav_svn from Apache Subversion earlier than version 1.2.0. Users are recommended to upgrade to version 2.4.66, which fixes this issue, or remove mod_dav_lock.

CVSS 7.5 · HighBuzz score 37.9

Buzz score

Why this CVE is surfacing

Buzz score total 37.9

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 17.9 · diversity 20.0 · KEV 0.0 · OTX 0.0 · PoC 0.0

Mention score

17.9

5 evidence mentions in the snapshot

Diversity score

20.0

4 sources across 4 categories

KEV score

0.0

No KEV entry observed

OTX score

0.0

0 OTX pulses

PoC score

0.0

0 repos · best confidence N/A

Best PoC traction

Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions: 0; within the 30d window
Peak daily: 0; highest bucket

Evidence

Source links by recency

Newest mentions first

5 source links · newest first

CVE-2026-29169 Apache HTTP Server: mod_dav_lock indirect lock crashMicrosoft MSRC
Information published.
vendormsrc.microsoft.comMay 7, 2026, 8:12 AM
Critical, High-Severity Vulnerabilities Patched in Apache MINA, HTTP ServerSecurityWeek
The most severe of these security defects could allow remote attackers to execute arbitrary code.
newswww.securityweek.comMay 5, 2026, 11:19 AM
http://www.openwall.com/lists/oss-security/2026/05/05/12www.openwall.com
No excerpt available.
Exploitwww.openwall.comMay 4, 2026, 3:16 PM
http://www.openwall.com/lists/oss-security/2026/05/04/20www.openwall.com
No excerpt available.
Exploitwww.openwall.comMay 4, 2026, 3:16 PM
https://httpd.apache.org/security/vulnerabilities_24.htmlhttpd.apache.org
No excerpt available.
Vendor Advisoryhttpd.apache.orgMay 4, 2026, 3:16 PM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars

No public PoC repositories have been matched yet.

Related records

Similar CVEs

6 related CVEs with shared weakness or product evidence

CVE-2026-33007
A NULL pointer dereference in the mod_authn_socache in Apache HTTP Server 2.4.66 and earlier allows an unauthenticated remote user to crash a child process in a caching forward pr…
CVSS 5.3 · Medium
4 mentions
CVE-2024-38477
null pointer dereference in mod_proxy in Apache HTTP Server 2.4.59 and earlier allows an attacker to crash the server via a malicious request. Users are recommended to upgrade to…
CVSS 7.5 · High
CVE-2024-36387
Serving WebSocket protocol upgrades over a HTTP/2 connection could result in a Null Pointer dereference, leading to a crash of the server process, degrading performance.
CVSS 5.4 · Medium
CVE-2021-44224
A crafted URI sent to httpd configured as a forward proxy (ProxyRequests on) can cause a crash (NULL pointer dereference) or, for configurations mixing forward and reverse proxy d…
CVSS 8.2 · High
2 mentions
CVE-2021-41524
While fuzzing the 2.4.49 httpd, a new null pointer dereference was detected during HTTP/2 request processing, allowing an external source to DoS the server. This requires a specia…
CVSS 7.5 · High
3 mentions
CVE-2021-34798
Malformed requests may cause the server to dereference a NULL pointer. This issue affects Apache HTTP Server 2.4.48 and earlier.
CVSS 7.5 · High

External lookup

Potential internet exposure

Potential exposure only — not proof of vulnerability.Shodan results indicate potentially internet-exposed products, not confirmed vulnerable systems. They do not confirm that any returned system is vulnerable to CVE-2026-29169.

Product-level CPE searches intentionally omit version fields and NVD version-range or configuration certainty. Verify the exact product version and configuration independently.

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Product CPE queries

Derived from this CVE's existing NVD CPE 2.3 records; the application, operating-system, or hardware part is retained.

cpe:2.3:a:apache:http_serverSearch this product on Shodan

Exact CVE query

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Metadata

Canonical fields

NVD status

Modified

Published

May 4, 2026

Modified

Jun 17, 2026

Official record

Authoritative NVD record

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE IDs

Vendor classifications

How this vector reads

CVSS 3.1 base metrics decoded below. This explanation does not recalculate or change the NVD score.

Attack Vector (AV): Network. The vulnerable system can be reached across network boundaries.
Attack Complexity (AC): Low. No special conditions beyond the attacker-controlled steps are required.
Privileges Required (PR): None. The attacker needs no privileges on the vulnerable system.
User Interaction (UI): None. Exploitation does not require another user to act.
Scope (S): Unchanged. Impacts remain within the vulnerable security authority.
Confidentiality Impact (C): None. There is no direct impact to this security property.
Integrity Impact (I): None. There is no direct impact to this security property.
Availability Impact (A): High. There is a total or serious impact to this security property.

Signals

Exploitation indicators

0 stored signals · no KEV · 0 OTX pulses