PatchTheCVECVE-2023-26047: teler-waf is a Go HTTP middleware that provides teler IDS functionality to protect against web-based attacks
CVE-2023-26047 is a medium-severity flaw (CVSS 6.5) affecting teler-waf. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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. A
Why this priority
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2023-26047?
teler-waf: upgrade to 0.2.0. Exact commands for each OS are on this page.
Is CVE-2023-26047 being exploited?
CVE-2023-26047 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2023-26047 affect?
CVE-2023-26047 affects teler-waf. Severity is medium (CVSS 6.5). 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 spe
How urgent is CVE-2023-26047?
Priority 39/100. Remotely exploitable, no login, no user action