CVE-2023-39326

mediumpriority · track · 21EPSS 0.012 · 68 %ileDEEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
1.21% (68th) EPSS
CVSS 5.3 · medium
Is it mine?
55 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-26

A malicious HTTP sender can use chunk extensions to cause a receiver reading from a request or response body to read many more bytes from the network than are in the body. A malicious HTTP client can further exploit this to cause a server to automatically read a large amount of data (up to about 1GiB) when a handler fails to read the entire body of a request. Chunk extensions are a little-used HTTP feature which permit including additional metadata in a request or response body sent using the chunked encoding. The net/http chunked encoding reader discards this metadata. A sender can exploit this by inserting a large metadata segment with each byte transferred. The chunk reader now produces an error if the ratio of real body to encoded bytes grows too small.

01

cvss

Technical severity, 0–10. One row per scoring source.

5.3
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 1.4
v3.15.3mediumAV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · FSTEC (BDU) RU
v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)
02

weaknesses

The CWE weakness classes this flaw belongs to.

03

affected products (55)

Products and version ranges known to be affected.

showing 20 of 55
04

advisories (7)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2023-3038Golang Go: Mehrere Schwachstellen ermöglichen nicht spezifizierten AngriffDeutsch2023-11-30csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in Golang Go ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen.

  • WID-SEC-W-2024-1226Red Hat OpenShift: Mehrere SchwachstellenDeutsch2024-05-22csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in Red Hat OpenShift ausnutzen, um Dateien zu manipulieren, einen Denial-of-Service-Zustand zu verursachen, beliebigen Code auszuführen, vertrauliche Informationen offenzulegen, seine Privilegien zu erweitern oder um weitere nicht spezifizierte Angriffe auszuführen.

  • WID-SEC-W-2024-1228Red Hat OpenStack: Mehrere SchwachstellenDeutsch2024-05-22csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Red Hat OpenStack ausnutzen, um Sicherheitsmaßnahmen zu umgehen, eine Denial-of-Service-Zustand zu erzeugen, um vertrauliche Informationen offenzulegen und Daten zu ändern.

  • WID-SEC-W-2024-1248Xerox FreeFlow Print Server: Mehrere SchwachstellenDeutsch2024-05-28csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in Xerox FreeFlow Print Server ausnutzen, um die Vertraulichkeit, Verfügbarkeit und Integrität des Systems zu gefährden

  • WID-SEC-W-2024-3054Splunk Add-on for Amazon Web Services: Mehrere SchwachstellenDeutsch2024-09-30csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in Splunk Add-on for Amazon Web Services ausnutzen, um einen Denial-of-Service-Zustand zu erzeugen, vertrauliche Informationen preiszugeben und Daten zu manipulieren.

  • BIT-golang-2023-39326Denial of service via chunk extensions in net/http2024-03-06vendor · osvUS

    A malicious HTTP sender can use chunk extensions to cause a receiver reading from a request or response body to read many more bytes from the network than are in the body. A malicious HTTP client can further exploit this to cause a server to automatically read a large amount of data (up to about 1GiB) when a handler fails to read the entire body of a request. Chunk extensions are a little-used HTTP feature which permit including additional metadata in a request or response body sent using the chunked encoding. The net/http chunked encoding reader discards this metadata. A sender can exploit this by inserting a large metadata segment with each byte transferred. The chunk reader now produces an error if the ratio of real body to encoded bytes grows too small.

  • GO-2023-2382Denial of service via chunk extensions in net/http2023-12-06vendor · osvUS

    A malicious HTTP sender can use chunk extensions to cause a receiver reading from a request or response body to read many more bytes from the network than are in the body. A malicious HTTP client can further exploit this to cause a server to automatically read a large amount of data (up to about 1GiB) when a handler fails to read the entire body of a request. Chunk extensions are a little-used HTTP feature which permit including additional metadata in a request or response body sent using the chunked encoding. The net/http chunked encoding reader discards this metadata. A sender can exploit this by inserting a large metadata segment with each byte transferred. The chunk reader now produces an error if the ratio of real body to encoded bytes grows too small.

05

also known as (6)

Other names and identifiers for this entity.

06

sources

Which sources assert this record, and when.

07

references (17)

External citations — patches, advisories, analysis.

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