CVE-2023-45143

lowpriority · track · 14EPSS 0.014 · 72 %ileDEEUNLRUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
1.37% (72nd) EPSS
CVSS 3.5 · low
Is it mine?
44 products
Check your exposure
Who says so?
8 sources
cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Undici is an HTTP/1.1 client written from scratch for Node.js. Prior to version 5.26.2, Undici already cleared Authorization headers on cross-origin redirects, but did not clear `Cookie` headers. By design, `cookie` headers are forbidden request headers, disallowing them to be set in RequestInit.headers in browser environments. Since undici handles headers more liberally than the spec, there was a disconnect from the assumptions the spec made, and undici's implementation of fetch. As such this may lead to accidental leakage of cookie to a third-party site or a malicious attacker who can control the redirection target (ie. an open redirector) to leak the cookie to the third party site. This was patched in version 5.26.2. There are no known workarounds.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

02

cvss

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

3.9
010

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

v3.13.5lowCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:Nprimary · NVD / NIST USexploitability 2.1 · impact 1.4
v3.13.9lowCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:Csecondary · CISA US
v3.13.5lowAV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:Nsecondary · FSTEC (BDU) RU
v3.13.9lowCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:Lsecondary · ENISA EU
v3.13.9lowCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:Lsecondary · security-advisories@github.comexploitability 0.5 · impact 3.4
v3.13.9lowCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:Lsecondary · OSV
v3.13.9lowCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:Csecondary · Siemens ProductCERT DE
v3.13.2lowCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)
03

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-200USCWE-200USCWE-200USCWE-200USCWE-200USCWE-200US
05

affected products (44)

Products and version ranges known to be affected.

showing 20 of 44
06

advisories (5)

Vendor and ecosystem advisories describing this.

  • NCSC-2024-0433Kwetsbaarheden verholpen in Siemens productenNL2024-11-12csaf · ncsc_nlNL

    Siemens heeft kwetsbaarheden verholpen in diverse producten als Mendix, RUGGEDCOM, SCALANCE, SIMATIC en SINEC.

  • SSA-915275SSA-915275: Multiple Vulnerabilities in SINEC INS Before V1.0 SP2 Update 32024-11-12csaf · siemens_psirtDE

    SINEC INS before V1.0 SP2 Update 3 is affected by multiple vulnerabilities. Siemens has released a new version for SINEC INS and recommends to update to the latest version.

  • WID-SEC-W-2023-2655Node.js: Mehrere SchwachstellenDeutsch2023-10-15csaf · cert_bundDE

    Ein entfernter, authentisierter oder anonymer Angreifer kann mehrere Schwachstellen in Node.js ausnutzen, um beliebigen Programmcode auszuführen, Informationen offenzulegen, einen Denial of Service Zustand herbeizuführen oder Sicherheitsvorkehrungen zu umgehen.

  • GHSA-wqq4-5wpv-mx2gUndici's cookie header not cleared on cross-origin redirect in fetch2023-10-16ghsa · osvUS

    ### Impact Undici clears Authorization headers on cross-origin redirects, but does not clear `Cookie` headers. By design, `cookie` headers are [forbidden request headers](https://fetch.spec.whatwg.org/#forbidden-request-header), disallowing them to be set in `RequestInit.headers` in browser environments. Since Undici handles headers more liberally than the specification, there was a disconnect from the assumptions the spec made, and Undici's implementation of fetch. As such this may lead to accidental leakage of cookie to a 3rd-party site or a malicious attacker who can control the redirection target (ie. an open redirector) to leak the cookie to the 3rd party site. ### Patches This was patched in [e041de359221ebeae04c469e8aff4145764e6d76](https://github.com/nodejs/undici/commit/e041de359221ebeae04c469e8aff4145764e6d76), which is included in version 5.26.2.

  • ICSA-24-319-08Siemens SINEC INS2024-11-12icsa · cisa_csaf_otUS

    SINEC INS before V1.0 SP2 Update 3 is affected by multiple vulnerabilities. Siemens has released a new version for SINEC INS and recommends to update to the latest version.

07

also known as (4)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducert_bundncsc_nlsiemens_psirtosvcisa_csaf_otNVDCVE.orgMITRE
published 2023-10-12modified 2026-06-17
09

references (38)

External citations — patches, advisories, analysis.

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