How severe is CVE-2026-34524?

CVE-2026-34524 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2026-34524 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34524?

CVE-2026-34524 affects Sillytavern. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-34524?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-34524 have an EU (EUVD) identifier?

Yes. CVE-2026-34524 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18442.

When was CVE-2026-34524 published?

CVE-2026-34524 was published on 2026-04-02 and last updated on 2026-06-17.

CVE-2026-34524

CVE-2026-34524 is a high-severity vulnerability in Sillytavern with a CVSS 3.x base score of 8.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: High (CVSS 3.x base score 8.3)
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-18442
Weakness: CWE-22
Affected product: Sillytavern
Published: 2026-04-02
Last modified: 2026-06-17

Description

SillyTavern is a locally installed user interface that allows users to interact with text generation large language models, image generation engines, and text-to-speech voice models. Prior to version 1.17.0, a path traversal vulnerability in chat endpoints allows an authenticated attacker to read and delete arbitrary files under their user data root (for example secrets.json and settings.json) by supplying avatar_url="..". This issue has been patched in version 1.17.0.

Frequently asked questions

What is CVE-2026-34524?: SillyTavern is a locally installed user interface that allows users to interact with text generation large language models, image generation engines, and text-to-speech voice models. Prior to version 1.17.0, a path traversal vulnerability in chat endpoints allows an authenticated attacker to read and delete arbitrary files under their user data root (for example secrets.json and settings.json) by supplying avatar_url="..". This issue has been patched in version 1.17.0.
How severe is CVE-2026-34524?: CVE-2026-34524 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2026-34524 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34524?: CVE-2026-34524 affects Sillytavern. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-34524?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-34524 have an EU (EUVD) identifier?: Yes. CVE-2026-34524 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18442.
When was CVE-2026-34524 published?: CVE-2026-34524 was published on 2026-04-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:sillytavern:sillytavern:*:*:*:*:*:node.js:*:*

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CVE-2026-26286 — High (CVSS 8.5): SillyTavern is a locally installed user interface that allows users to interact with text generation large language…
CVE-2026-34522 — High (CVSS 8.1): SillyTavern is a locally installed user interface that allows users to interact with text generation large language…
CVE-2026-34523 — Medium (CVSS 5.3): SillyTavern is a locally installed user interface that allows users to interact with text generation large language…
CVE-2026-34526 — Medium (CVSS 5.0): SillyTavern is a locally installed user interface that allows users to interact with text generation large language…

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