What is CVE-2026-23843?

CVE-2026-23843 is a high-severity vulnerability in Sibercii6-Crypto Teklifolustur App, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.1/10. Published 2026-01-19.

How severe is CVE-2026-23843?

High severity. CVSS v3 base score is 7.1 out of 10.

Auth bypass in Sibercii6-Crypto Teklifolustur App

CVE-2026-23843

teklifolustur_app is a web-based PHP application that allows users to create, manage, and track quotes for their clients. Prior to commit dd082a134a225b8dcd401b6224eead4fb183ea1c, an Insecure Direct Object Reference (IDOR) vulnerability exists in the offer view functionality. Authenticated users can manipulate the offer_id parameter to access offers belonging to other users. The issue is caused by missing authorization checks ensuring that the requested offer belonged to the currently authenticated user. Commit dd082a134a225b8dcd401b6224eead4fb183ea1c contains a patch.

Vulnerability class: IDOR (Insecure Direct Object Reference)

EPSS: 0.002 (10.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N.

Affected products

Sibercii6-crypto Teklifolustur_app — versions < dd082a134a225b8dcd401b6224eead4fb183ea1c

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-23843?: CVE-2026-23843 is a high-severity vulnerability in Sibercii6-Crypto Teklifolustur App, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.1/10. Published 2026-01-19.
How severe is CVE-2026-23843?: High severity. CVSS v3 base score is 7.1 out of 10.