CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS
Percentile
46.8%
teler-waf is a Go HTTP middleware that provides teler IDS functionality to protect against web-based attacks. Versions prior to v0.1.1 are vulnerable to bypassing common web attack rules when a specific HTML entities payload 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. The vulnerability exists due to teler-waf failure to properly sanitize and filter HTML entities in user input.
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.
Version v0.1.1 includes a patch for this vulnerability.
We advised updating their installations to version v0.1.1
and frontwards immediately.
github.com/advisories/GHSA-9f95-hhg4-pg4f
github.com/kitabisa/teler-waf/commit/d1d49cfddfa3ec2adad962870f14b85cd1aaf739
github.com/kitabisa/teler-waf/compare/v0.1.0...v0.1.1
github.com/kitabisa/teler-waf/releases/tag/v0.1.1
github.com/kitabisa/teler-waf/security/advisories/GHSA-9f95-hhg4-pg4f
nvd.nist.gov/vuln/detail/CVE-2023-26046
pkg.go.dev/vuln/GO-2023-1597