What is CVE-2026-44648?

CVE-2026-44648 is a high-severity vulnerability in Sillytavern, classified under Insufficient Session Expiration. CVSS score: 7.5/10. Published 2026-05-29.

How severe is CVE-2026-44648?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2026-44648 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Sillytavern

CVE-2026-44648

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 1.18.0, SillyTavern relies on cookie-session fo…

EPSS: 0.000 (4.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Sillytavern — versions < 1.18.0

Weakness classification (CWE)

CWE-613 — Insufficient Session Expiration

Public proof-of-concept exploits

zzzm0919/CVE-2026-44648

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-44648?: CVE-2026-44648 is a high-severity vulnerability in Sillytavern, classified under Insufficient Session Expiration. CVSS score: 7.5/10. Published 2026-05-29.
How severe is CVE-2026-44648?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2026-44648 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.