{"cve":"CVE-2023-26047","nvd":{"published":"2023-03-03T23:15:12.203","modified":"2026-06-17T05:42:32.590","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-79","CWE-80","CWE-692"],"references":["https://github.com/dwisiswant0/cwa-filter-rules/commit/d818d1645832d1a02cd210c7680e692d2bf4313b","https://github.com/kitabisa/teler-waf/releases/tag/v0.2.0","https://github.com/kitabisa/teler-waf/security/advisories/GHSA-p2pf-g8cq-3gq5","https://github.com/dwisiswant0/cwa-filter-rules/commit/d818d1645832d1a02cd210c7680e692d2bf4313b","https://github.com/kitabisa/teler-waf/releases/tag/v0.2.0"],"products":["kitabisa:teler-waf"],"source":"nvd","synced_at":"2026-10-19T21:37:41.955480748+00:00"},"epss":{"cve":"CVE-2023-26047","score":0.00516,"percentile":0.43966,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-p2pf-g8cq-3gq5","url":"https://osv.dev/vulnerability/GHSA-p2pf-g8cq-3gq5","summary":"teler-waf contains detection rule bypass via Entities payload","modified":"2026-09-10T03:49:52.955865988Z","packages":[{"ecosystem":"Go","name":"github.com/kitabisa/teler-waf","purl":"pkg:golang/github.com/kitabisa/teler-waf","ranges":["<0.2.0"],"fixed":["0.2.0"]}]},{"id":"GO-2023-1600","url":"https://osv.dev/vulnerability/GO-2023-1600","summary":"Arbitrary code execution in github.com/kitabisa/teler-waf","modified":"2024-05-20T16:03:47Z","packages":[{"ecosystem":"Go","name":"github.com/kitabisa/teler-waf","purl":"pkg:golang/github.com/kitabisa/teler-waf","ranges":["<0.2.0"],"fixed":["0.2.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}