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CVE-2024-21497

18
FAUCET Score

CVE-2024-21497 is an Open Redirect vulnerability affecting all versions of the greenpau/caddy-security package. An attacker can exploit this by manipulating the redirect_url parameter to redirect users to malicious websites, facilitating phishing attacks. This vulnerability has a CVSS score of 6.1 (Medium), indicating a low-complexity attack requiring user interaction (e.g., clicking a link) to achieve partial confidentiality and integrity impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:greenpau:caddy-security:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.50%
Probability of exploitation in next 30 days
EPSS Percentile
40.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0050 is in the 42nd percentile among its peer group of 26,219 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

goGHSA-8hp3-rmr7-xh88medium

Open Redirect in github.com/greenpau/caddy-security

Feb 17, 2024

References

blog.trailofbits.com / 2023/09/18/security-flaws-in-an-sso-plugin-for-caddy
MitigationThird Party Advisory
github.com / greenpau/caddy-security/issues/268
Issue Tracking
security.snyk.io / vuln/SNYK-GOLANG-GITHUBCOMGREENPAUCADDYSECURITY-6249861
Third Party Advisory