CVE-2024-58134Public exploitNetwork attack vector

Session hijacking via predictable HMAC cookie secret

Published May 3, 2025 · Updated Oct 20, 2025

Session cookie forgery in Mojolicious from 0.999922 allows remote authenticated users to tamper with or hijack application sessions. The secrets attribute defaults to the application moniker, and signed session cookies use that predictable value as the HMAC-SHA1 key. Exploitation requires a signed cookie and knowledge or a correct guess of the default secret; a forged cookie can rewrite session data or impersonate another session.

CVSS severity8.1
High
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Session cookie forgery in Mojolicious from 0.999922 allows remote authenticated users to tamper with or hijack application sessions. The secrets attribute defaults to the application moniker, and signed session cookies use that predictable value as the HMAC-SHA1 key. Exploitation requires a signed cookie and knowledge or a correct guess of the default secret; a forged cookie can rewrite session data or impersonate another session.

The record

CVE
CVE-2024-58134
Published
May 3, 2025
Updated
Oct 20, 2025
Vendor
Mojolicious
Product
Mojolicious
Classifications
CWE-321, CWE-331, T1606.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 3, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 20, 2025Record 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=0.999922 <=*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Mojolicious · Mojoliciousversion=0.999922 <=*

Published CVSS scores

8.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-321Use of Hard-coded Cryptographic Key
CWE-331Insufficient Entropy
T1606.001Web Cookies

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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