CVE-2026-91995Network attack vector

Account takeover via discarded password verification

Published Sep 15, 2026 · Updated Sep 15, 2026

Authentication bypass in pig-mesh Pig before 4.1.0 allows remote attackers to overwrite any account password through /register/password. The endpoint invokes current-password verification but discards its result before saving the attacker-supplied replacement password for the submitted username. Network reachability of the endpoint is sufficient; changing the administrator password grants full administrative control and locks the legitimate account out.

CVSS severityUnavailable
Unscored
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in pig-mesh Pig before 4.1.0 allows remote attackers to overwrite any account password through /register/password. The endpoint invokes current-password verification but discards its result before saving the attacker-supplied replacement password for the submitted username. Network reachability of the endpoint is sufficient; changing the administrator password grants full administrative control and locks the legitimate account out.

The record

CVE
CVE-2026-91995
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
pig-mesh
Product
Pig
Classifications
T1098
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <4.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

pig-mesh · Pigversion=0 <4.1.0

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1098Account Manipulation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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