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CVE-2026-6253

CVE Details​

Visit the official vulnerability details page for CVE-2026-6253 to learn more.

Initial Publication​

05/13/2026

Last Update​

09/15/2026

Third Party Dependency​

curl-minimal

NIST CVE Summary​

curl might erroneously pass on credentials for a first proxy to a second proxy.

This can happen when the following conditions are true:

  1. curl is setup to use specific different proxies for different URL schemes
  2. the first proxy needs credentials
  3. the second proxy uses no credentials
  4. while using the first proxy (using say `http://`), curl is asked to follow a redirect to a URL using another scheme (say `https://`), accessed using a second, different, proxy

CVE Severity​

5.9

Our Official Summary​

Investigation is ongoing to determine how this vulnerability affects our products.

Status​

Modified

Affected Products & Versions​

VersionPaletteAIPaletteAI VerteX
1.4.0⚠️ Impacted⚠️ Impacted
1.3.2⚠️ Impacted⚠️ Impacted
1.2.2⚠️ Impacted⚠️ Impacted

Revision History​

No revisions available.