CVE-2026-85078Disclosure

LOWCVSS 6.5 · MEDIUM

Signal is active with 2 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

Sanic is an opensource python web server/framework. In version 25.12.0, Sanic's core HTTP/1.1 chunked-body handling does not fully consume the trailer-part after the terminating zero chunk before reusing the keep-alive connection buffer. A remote unauthenticated client can place attacker-controlled bytes in that trailer region, causing Sanic to parse and route them as a hidden second request after the outer request. This breaks HTTP request-boundary integrity and can provide a request-smuggling primitive when Sanic is deployed behind intermediaries. This issue is fixed in version 25.12.1.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-444

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • 2 total mentions across 1 day

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-09-17: 2Technical Details · 2026-09-17: 209-17
Signal classification1 categories
Disclosure
2100.0%
Referenced assets2 URLs
Full discourse2 posts
  • DailyCVE@dailycve
    Disclosure

    🟠 Sanic, HTTP Request Smuggling via Chunked Trailer, #CVE-2026-85078 (Medium) -DC-Sep2026-2423 https://dailycve.com/sanic-http-request-smuggling-via-chunked-trailer-cve-2026-85078-medium-dc-sep2026-2423/

    Post summary

    The tweet announces CVE‑2026‑85078, describing an HTTP Request Smuggling flaw in Sanic via Chunked Trailer and links to a detailed article, with no PoC, exploit, patch, or active exploitation information provided.

    0000051
    236 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-85078 Sanic is an opensource python web server/framework. In version 25.12.0, Sanic's core HTTP/1.1 chunked-body handling does not fully consume the trailer-part after the … https://www.cve.org/CVERecord?id=CVE-2026-85078

    Post summary

    The text discloses CVE-2026-85078 affecting Sanic 25.12.0, describing a technical vulnerability in HTTP/1.1 chunked-body trailer handling, but provides no PoC, exploit, active exploitation evidence, or remediation guidance.

    000001.2K
    58.1K followersView on X

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