Cyber Resilience

CVE-2024-21510

Medium

Published: 01 November 2024

Published
01 November 2024
Modified
15 April 2026
KEV Added
Patch
CVSS Score v3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
EPSS Score 0.0021 43.5th percentile
Risk Priority 11 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-21510 is a medium-severity Reliance on Untrusted Inputs in a Security Decision (CWE-807) vulnerability in Snyk (inferred from references). Its CVSS base score is 5.4 (Medium).

Operationally, ranked at the 43.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Versions of the package sinatra from 0.0.0 are vulnerable to Reliance on Untrusted Inputs in a Security Decision via the X-Forwarded-Host (XFH) header. When making a request to a method with redirect applied, it is possible to trigger an Open…

more

Redirect Attack by inserting an arbitrary address into this header. If used for caching purposes, such as with servers like Nginx, or as a reverse proxy, without handling the X-Forwarded-Host header, attackers can potentially exploit Cache Poisoning or Routing-based SSRF.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

Snyk
inferred from references and description; NVD did not file a CPE for this CVE

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.

addresses: CWE-807

Prevents reliance on untrusted matching results for security-relevant decisions by enforcing verification and contest procedures.

addresses: CWE-807

Providing authoritative attributes with the data reduces the need for security decisions to rely on untrusted external inputs.

addresses: CWE-807

Reduces reliance on untrusted inputs by ensuring only authorized sources may supply data.

References