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CVE-2025-57800VulnerabilityPublished

CVE-2025-57800: advplyr audiobookshelf · Unprotected Transport of Credentials

Affects advplyr audiobookshelfSource CVE Database V5

0

Not known to be exploited · CVSS 8.8 High · fixed in 2.28.0 : patch advplyr audiobookshelf soon.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 39% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 2.28.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 22 Aug 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

What to do

AI-suggested

The primary mitigation is to upgrade Audiobookshelf to version 2.28.0 or later, where the vulnerability is fixed by properly validating and restricting redirect callback URLs during OIDC authentication. Organizations should prioritize this update in their patch management cycles. If you cannot patch yet, organizations should restrict access to the Audiobookshelf server to trusted networks and users to reduce exposure to malicious login links. Implementing strict Content Security Policies (CSP) and monitoring HTTP logs for unusual redirect patterns or unexpected 302 responses can help detect exploitation attempts. Additionally, organizations should educate users about the risks of clicking unsolicited login links and encourage the use of multi-factor authentication (MFA) where possible to reduce the impact of token theft. Reviewing and rotating OIDC tokens and credentials after patching can help invalidate any stolen tokens. Logging and monitoring should be enhanced to detect suspicious account activities, such as unexpected admin user creation. Finally, organizations should audit their OIDC configurations and ensure that tokens are never exposed in URLs or logs in other integrated systems.

Description

Audiobookshelf is an open-source self-hosted audiobook server. In versions 2.6.0 through 2.26.3, the application does not properly restrict redirect callback URLs during OIDC authentication. An attacker can craft a login link that causes Audiobookshelf to store an arbitrary callback in a cookie, which is later used to redirect the user after authentication. The server then issues a 302 redirect to the attacker-controlled URL, appending sensitive OIDC tokens as query parameters. This allows an attacker to obtain the victim's tokens and perform full account takeover, including creating persistent admin users if the victim is an administrator. Tokens are further leaked via browser history, Referer headers, and server logs. This vulnerability impacts all Audiobookshelf deployments using OIDC; no IdP misconfiguration is required. The issue is fixed in version 2.28.0. No known workarounds exist.

References

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