teler-waf contains detection rule bypass via Entities payload

TRUNG BÌNH 6.1CVE-2023-26047 · GHSA-p2pf-g8cq-3gq5 · GO-2023-1600 · Công bố 03/03/2023 · cập nhật 17/06/2026

Tóm tắt nhanh

CVE-2023-26047 là lỗ hổng mức TRUNG BÌNH (CVSS 6.1) ảnh hưởng github.com/kitabisa/teler-waf, teler-waf (kitabisa).
Xác suất bị khai thác trong 30 ngày tới (EPSS): 0.52%, cao hơn 44.1% các lỗ hổng khác.
Cách xử lý: cập nhật lên 0.2.0 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
github.com/kitabisa/teler-waf Go	`< 0.2.0`	`0.2.0`
teler-waf kitabisa	`< 0.2.0`	`0.2.0`

Mô tả

Description

teler-waf is a Go HTTP middleware that provides teler IDS functionality to protect against web-based attacks. teler-waf prior to version v0.2.0 is vulnerable to a bypass attack when a specific case-sensitive hex entities payload with special characters such as CR/LF and horizontal tab is used. This vulnerability allows an attacker to execute arbitrary JavaScript code on the victim's browser and compromise the security of the web application.

Impact

An attacker can exploit this vulnerability to bypass common web attack threat rules in teler-waf and launch cross-site scripting (XSS) attacks. The attacker can execute arbitrary JavaScript code on the victim's browser and steal sensitive information, such as login credentials and session tokens, or take control of the victim's browser and perform malicious actions.

Patches

Version v0.2.0 includes a patch for this vulnerability.

Workarounds

We advised updating their installations to version v0.2.0 and frontwards immediately.

Mô tả của NVD

teler-waf is a Go HTTP middleware that provides teler IDS functionality to protect against web-based attacks. In teler-waf prior to version v0.2.0 is vulnerable to a bypass attack when a specific case-sensitive hex entities payload with special characters such as CR/LF and horizontal tab is used. This vulnerability allows an attacker to execute arbitrary JavaScript code on the victim's browser and compromise the security of the web application. An attacker can exploit this vulnerability to bypass common web attack threat rules in teler-waf and launch cross-site scripting (XSS) attacks. The attacker can execute arbitrary JavaScript code on the victim's browser and steal sensitive information, such as login credentials and session tokens, or take control of the victim's browser and perform malicious actions. This issue has been patched in version 0.2.0.