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CVE-2026-74994

inets, httpd: Authentication Bypass via Directory Namespace Collapse in httpd mod_auth

Published: Sep 1, 2026Updated: Sep 8, 2026 Sources: CVE List NVDCWE-863
N/ACVSS
NVD MITRE
EPSS Score
0.4%
Top 69.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
OpenVAS

Description

The mod_auth module in OTP's inets httpd server, when configured with dets or mnesia authentication backends and multiple directory configuration blocks, collapses all directory blocks into a single shared user/group namespace. A user added to one protected directory is accepted as valid for all other protected directories on the same server instance. This issue affects OTP from OTP 17.0 before OTP 27.3.4.17, from OTP 28.0 before OTP 28.5.0.6, and from OTP 29.0 before OTP 29.0.6, corresponding to inets from 5.10 before 9.3.2.7, from 9.4 before 9.6.2.3, and from 9.7 before 9.7.2. Whether OTP before OTP 17.0, corresponding to inets before 5.10, is affected is unknown.

No summary for this CVE yet.

Weaknesses

CWE-863CWE-1289

Affected Products

Erlang
oss-projectaka erlang/otp, otp, erlang/ssh
OTPLibraryLibrary
OSS Libraries / generic-library

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
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References

https://github.com/erlang/otp/security/advisories/GHSA-c3cq-q8x6-547g
github.com
https://cna.erlef.org/cves/CVE-2026-74994.html
cna.erlef.org
https://osv.dev/vulnerability/EEF-CVE-2026-74994
osv.dev
and 3 more references View all →
News mentions
1

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