CVE-2026-0612: The Librarian contains a information leakage vulnerability through the `web_fetch` tool, which can be used to

Routine

HIGH 7.5REMOTEMITIGATE

CVE-2026-0612 is a high-severity flaw (CVSS 7.5) affecting the librarian. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Librarian contains a information leakage vulnerability through the `web_fetch` tool, which can be used to retrieve arbitrary external content provided by an attacker, which can be used to proxy requests through The Librarian infrastructure. The vendor has fixed the vulnerability in all versions of TheLibrarian.

Why this priority

High severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 69%)
CISA exploited list	No
Published	2026-01-16
Last modified	2026-06-17

Publisher (CNA): CERT/CC · Vendor: thelibrarian

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-01-16 13:16 UTCPublished CVE record published
2026-06-17 10:11 UTCUpdated Record last modified

thelibrarian the librarian MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy the-librarian || rpm -q the-librarian || the-librarian --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-0612?

the librarian: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-0612 being exploited?

CVE-2026-0612 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-0612 affect?

CVE-2026-0612 affects the librarian. Severity is high (CVSS 7.5). The Librarian contains a information leakage vulnerability through the `web_fetch` tool, which can be used to retrieve arbitrary external content provided by an attacker, which can be used to proxy requests through The Librarian infrastruct

How urgent is CVE-2026-0612?

Priority 39/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-0616 HIGH 7.5 MITIGATE TheLibrarians web_fetch tool can be used to retrieve the Adminer interface content, which can then be used to
CVE-2026-0615 HIGH 7.3 MITIGATE The Librarian `supervisord` status page can be retrieved by the `web_fetch` tool, which can be used to retriev
CVE-2026-0613 HIGH 7.5 MITIGATE The Librarian contains an internal port scanning vulnerability, facilitated by the `web_fetch` tool, which can

References

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