CVE-2026-31845CRITICAL 9.3EPSS p39.1%

CVE-2026-31845CVE-2026-31845

Description

A reflected cross-site scripting (XSS) vulnerability exists in Rukovoditel CRM version 3.6.4 and earlier in the Zadarma telephony API endpoint (/api/tel/zadarma.php). The application directly reflects user-supplied input from the 'zd_echo' GET parameter into the HTTP response without proper sanitization, output encoding, or content-type restrictions.

Scoring

CVSS 3.19.3 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
EPSS0.48% probability of exploitation · percentile 39.1% · 2026-10-05T12:00:23Z
Published2026-04-11
Last modified2026-08-10

Underlying weaknesses· 1

CWE-79

References

  1. https://forum.rukovoditel.net/viewtopic.php?p=22499#p22499

1

TypeTargetConfidenceTier
WeaknessImproper Neutralization of Input During Web Page Generation ('Cross-site Scripting')cwe-790%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.