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CVE-2023-51665· NVD / CVE Program· CNA GitHub_M

Audiobookshelf vulnerable to Blind SSRF in `Auth.js`

Audiobookshelf is a self-hosted audiobook and podcast server. Prior to 2.7.0, Audiobookshelf is vulnerable to unauthenticated blind server-side request (SSRF) vulnerability in Auth.js. This vulnerability has been addressed in version 2.7.0. There are no known workarounds for this vulnerability.

HighCVSS 7.5 · v3.1—No exploit Fix available

Noroxi analysis

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Published
Dec 27, 2023
Updated
Jun 17, 2026
EPSS
0.3% · 26th percentile
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Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CNA vs NVD score

NVD
7.5
CNA · GitHub_M
4.3
3.2 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
audiobookshelfaudiobookshelf

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • audiobookshelf audiobookshelfbefore 2.7.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • advplyr audiobookshelf

    • < 2.7.0affected

Same product

audiobookshelf: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-57800Audiobookshelf vulnerable to OIDC token exfiltration and account takeover
    35Monitor
  • CVE-2025-25205Remote Authentication-Bypass can lead to server crash or limited information disclosure due to faulty pattern matching
    33Monitor
  • CVE-2023-51697Audiobookshelf vulnerable to Blind SSRF in `podcastUtils.js`
    30Monitor
  • CVE-2025-46338Audiobookshelf Vulnerable to Cross-Site-Scripting Reflected via POST Request in /api/upload
    27Monitor
  • CVE-2023-47624Audiobookshelf Arbitrary File Read Vulnerability
    26Monitor
  • CVE-2023-47619Audiobookshelf Server-Side Request Forgery and Arbitrary File Read Vulnerability
    26Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
advplyr audiobookshelf2.7.0 · descriptionVendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2023-516970 days apartAudiobookshelf vulnerable to Blind SSRF in `podcastUtils.js`
    30Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-918 · Server-Side Request Forgery (SSRF)

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

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References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records