CVE-2024-21497: Versions of the package github.com/greenpau/caddy-security are vulnerable to Open Redirect via the redirect_u

Routine

MEDIUM 5.4MITIGATE

CVE-2024-21497 is a medium-severity flaw (CVSS 5.4) affecting caddy-security. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Versions of the package github.com/greenpau/caddy-security are vulnerable to Open Redirect via the redirect_url parameter. An attacker could perform a phishing attack and trick users into visiting a malicious website by crafting a convincing URL with this parameter. To exploit this vulnerability, the user must take an action, such as clicking on a portal button or using the browser’s back button, to trigger the redirection.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.5% (top 57%)
CISA exploited list	No
Weakness	CWE-601
Published	2024-02-17
Last modified	2026-06-17

Publisher (CNA): Snyk · Vendor: greenpau

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-02-17 05:15 UTCPublished CVE record published
2026-06-17 07:09 UTCUpdated Record last modified

greenpau caddy-security MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy caddy-security || rpm -q caddy-security || caddy-security --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
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-2024-21497?

caddy-security: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-21497 being exploited?

CVE-2024-21497 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-2024-21497 affect?

CVE-2024-21497 affects caddy-security. Severity is medium (CVSS 5.4). Versions of the package github.com/greenpau/caddy-security are vulnerable to Open Redirect via the redirect_url parameter. An attacker could perform a phishing attack and trick users into visiting a malicious website by crafting a convinci

How urgent is CVE-2024-21497?

Priority 30/100. No elevated risk signals yet.

Software pages

GitHub vulnerabilities · Caddy vulnerabilities

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CVE-2024-21500 MEDIUM 4.8 MITIGATE All versions of the package github.com/greenpau/caddy-security are vulnerable to Improper Restriction of Exces
CVE-2024-21499 MEDIUM 4.3 MITIGATE All versions of the package github.com/greenpau/caddy-security are vulnerable to HTTP Header Injection via the
CVE-2024-21498 MEDIUM 5.3 MITIGATE All versions of the package github.com/greenpau/caddy-security are vulnerable to Server-side Request Forgery (
CVE-2024-21496 MEDIUM 6.1 MITIGATE All versions of the package github.com/greenpau/caddy-security are vulnerable to Cross-site Scripting (XSS) vi
CVE-2024-21495 MEDIUM 6.5 UPGRADE Versions of the package github.com/greenpau/caddy-security before 1.0.42 are vulnerable to Insecure Randomness

References

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