TI-2020-10753 Aliases CVE-2020-13758 GHSA-wcg2-jvm2-p49v

modules/security/classes/general.post_filter.php/post_filter.php in the Web Application…

LOW 29CWE-79Published 2020-06-01 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

modules/security/classes/general.post_filter.php/post_filter.php in the Web Application Firewall in Bitrix24 through 20.0.950 allows XSS by placing %00 before the payload.

Why it matters now

EPSS 0.0086 58th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:bitrix:bitrix24::::::::	up to 20.0.950	Vulnerable	Bitrix

cpe:2.3:a:bitrix:bitrix24:*:*:*:*:*:*:*:* Versions up to 20.0.950 Vulnerable ·Bitrix

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-13758
2026-10-03 Alias added: GHSA-wcg2-jvm2-p49v

References

Exploit 1

https://blog.deteact.com/bitrix-waf-bypass/

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences