CVE-2022-28923
Published: 06 February 2023
Summary
CVE-2022-28923 is a medium-severity Open Redirect (CWE-601) vulnerability in Caddyserver Caddy. Its CVSS base score is 6.1 (Medium).
Operationally, ranked in the top 12.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
Caddy version 2.4.6 contains an open redirection vulnerability tracked as CVE-2022-28923 and assigned CWE-601. The flaw received a CVSS 3.1 score of 6.1 reflecting network attack vector, low complexity, no required privileges, and required user interaction, with impacts limited to limited confidentiality and integrity loss in a changed scope.
An unauthenticated attacker can supply a crafted URL that causes the server to redirect victims to an arbitrary external site. Successful exploitation enables phishing campaigns that may capture credentials or deliver further malicious content while appearing to originate from the trusted Caddy-hosted domain.
The EPSS probability rose from a low baseline to a peak of 0.2657 before receding to the current value of 0.0324, indicating that exploitation interest emerged after public disclosure and that the issue merits renewed attention. Responsible-disclosure information is published at the referenced URL.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-0778
Vulnerability details
Caddy v2.4.6 was discovered to contain an open redirection vulnerability which allows attackers to redirect users to phishing websites via crafted URLs.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.