How severe is CVE-2026-34523?

CVE-2026-34523 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-34523 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34523?

CVE-2026-34523 affects Sillytavern. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-34523?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-34523 have an EU (EUVD) identifier?

Yes. CVE-2026-34523 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18440.

When was CVE-2026-34523 published?

CVE-2026-34523 was published on 2026-04-02 and last updated on 2026-06-17.

CVE-2026-34523

CVE-2026-34523 is a medium-severity vulnerability in Sillytavern with a CVSS 3.x base score of 5.3. 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: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-18440
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 the static file route handler allows any unauthenticated user to determine whether files exist anywhere on the server's filesystem. by sending percent-encoded "../" sequences (%2E%2E%2F) in requests to static file routes, an attacker can check for the existence of files. This issue has been patched in version 1.17.0.

Frequently asked questions

What is CVE-2026-34523?: 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 the static file route handler allows any unauthenticated user to determine whether files exist anywhere on the server's filesystem. by sending percent-encoded "../" sequences (%2E%2E%2F) in requests to static file routes, an attacker can check for the existence of files. This issue has been patched in version 1.17.0.
How severe is CVE-2026-34523?: CVE-2026-34523 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-34523 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34523?: CVE-2026-34523 affects Sillytavern. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-34523?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-34523 have an EU (EUVD) identifier?: Yes. CVE-2026-34523 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18440.
When was CVE-2026-34523 published?: CVE-2026-34523 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:*:*

More vulnerabilities in Sillytavern

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-2026-34524 — High (CVSS 8.3): 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-2026-34526 — Medium (CVSS 5.0): SillyTavern is a locally installed user interface that allows users to interact with text generation large language…

All CVEs affecting Sillytavern →

Other CWE-22 (Path Traversal) vulnerabilities

CVE-2026-48282 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Limitation of a Pathname to a Restricted…
CVE-2026-54917 — Critical (CVSS 10.0): SeaweedFS is a distributed storage system for object storage (S3), file systems, and Iceberg tables. Prior to 4.30, the…
CVE-2026-11429 — Critical (CVSS 10.0): Two endpoints in the Vault Service ScriptsController, shared by Altium Enterprise Server and Altium 365, accept file…
CVE-2026-34909 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi OS devices to…
CVE-2026-7411 — Critical (CVSS 10.0): In Eclipse BaSyx Java Server SDK versions prior to 2.0.0-milestone-10, inadequate path normalization in the Submodel…
CVE-2026-36767 — Critical (CVSS 10.0): A path traversal vulnerability in the /content/images/add endpoint of shopizer v3.2.5 allows attackers write arbitrary…

Browse all CWE-22 (Path Traversal) vulnerabilities →