VulnSocial

CVE-2026-40562Disclosure(kazeburo / gazelle)

LOWCVSS 7.5 · HIGH

Signal is active with 3 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Gazelle versions through 0.49 for Perl allows HTTP Request Smuggling via Improper Header Precedence. Gazelle incorrectly prioritizes "Content-Length" over "Transfer-Encoding: chunked" when both headers are present in an HTTP request. Per RFC 7230 3.3.3, Transfer-Encoding must take precedence. An attacker could exploit this to smuggle malicious HTTP requests via a front-end reverse proxy.

kazeburo CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Patch / fix
Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-444

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • gazelle

Threat summary

  • 3 mentions across 1 observed day

What's happening

  • Technical details provided in 3 signals
  • Disclosure: 3 classified signals
  • 3 total mentions across 1 day

Affected systems

Vendors
kazeburo
Products
gazelle

Deep dive

Activity timeline3 mentions / 1d
01223Mentions · 2026-05-06: 3Technical Details · 2026-05-06: 305-06
Signal classification1 categories
Disclosure
3100.0%
Referenced assets4 URLs
Full discourse3 posts
  • Open Source Security mailing list@oss_security
    Disclosure

    Perl CPAN CVE-2026-5081: Apache::Session::Generate::ModUniqueId versions from 1.54 through 1.94 session ids are insecure https://www.openwall.com/lists/oss-security/2026/05/06/6 CVE-2026-40562: Gazelle versions through 0.49 allows HTTP Request Smuggling via Improper Header Precedence https://www.openwall.com/lists/oss-security/2026/05/06/7

    Post summary

    This brief post announces two new CVEs, outlining their vulnerability types but providing no PoC, tool, exploitation, or patch information.

    00072505
    4.7K followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-40562 Gazelle versions through 0.49 for Perl allows HTTP Request Smuggling via Improper Header Precedence. Gazelle incorrectly prioritizes "Content-Length" over "Transfer-… https://www.cve.org/CVERecord?id=CVE-2026-40562

    Post summary

    CVE-2026-40562 affects Gazelle versions up to 0.49 by enabling HTTP request smuggling due to improper header precedence, with no indicated exploitation, patch, or PoC provided.

    00010147
    57.4K followersView on X
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-40562 Gazelle versions through 0.49 for Perl allows HTTP Request Smuggling via Improper Header Precedence. Gazelle incorrectly prioritizes "Content-Length" over "Transfer-… https://www.cve.org/CVERecord?id=CVE-2026-40562 ----- Traducción: CVE-2026-40562 Gaz… http://infoflow.cloud`

    Post summary

    The tweet announces CVE‑2026‑40562, describing a header precedence flaw in Gazelle up to 0.49 that enables HTTP request smuggling, and links to the official CVE record.

    0000034
    75 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appkazeburogazelle-perl-

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