[UPDATE] [medium] cURL: Multiple vulnerabilities

CSIRTS triage

What

Multiple vulnerabilities in cURL permit security bypass and information disclosure.

Who is affected

Applications and systems using vulnerable versions of cURL are affected.

Urgency

Medium priority; auth bypass and information disclosure require timely patching but are less critical than RCE.

Action

Update cURL to a patched version addressing CVE-2026-1965, CVE-2026-3783, CVE-2026-3784, and CVE-2026-3805.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source

CERT-Bund (BSI) Security Advisories (DE · national-cert · site)

Severity

medium

Published

2026-08-19

Exploitation

Not in CISA KEV at last sync

Language

Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0690

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

• Low exploitation riskCVE-2026-19650.26% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 18% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-37830.33% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 26% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-37840.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 23% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-38050.74% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 52% of all EPSS-scored CVEs.

Referenced CVEs

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

• high[NEW] [high] Apple macOS, iOS and iPadOS: Multiple vulnerabilitiescert-bund
• unknownApple Products Multiple Vulnerabilitieshkcert
• unknownMultiple vulnerabilities in Apple products (August 18, 2026)cert-fr-avis
• unknownMultiple vulnerabilities in Tenable Security Center (August 14, 2026)cert-fr-avis
• high[NEW] [high] Apple macOS (Tahoe, Sonoma, and Sequoia): Multiple vulnerabilitiescert-bund
• medium[NEW] [medium] Apple iOS and iPadOS: Multiple vulnerabilitiescert-bund
• unknownNCSC-2026-0267 [1.00] [M/H] Vulnerabilities fixed in Apple MacOSncsc-nl
• unknownNCSC-2026-0266 [1.00] [M/H] Vulnerabilities fixed in Apple iOS and iPadOSncsc-nl
• unknownApple Products Multiple Vulnerabilitieshkcert
• unknownMultiple vulnerabilities in Apple products (July 28, 2026)cert-fr-avis
• criticalSiemens SINEC OScisa
• unknownMultiple vulnerabilities in Tenable Identity Exposure (June 24, 2026)cert-fr-avis

Recent advisories for cURL

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

• unknownUSN-8651-1: curl vulnerabilityubuntu · 2026-08-19
• medium[UPDATE] [medium] cURL: Multiple vulnerabilitiescert-bund · 2026-08-19
• medium[UPDATE] [medium] cURL: Multiple vulnerabilitiescert-bund · 2026-08-19
• medium[UPDATE] [medium] cURL: Multiple vulnerabilitiescert-bund · 2026-08-19
• high[UPDATE] [high] cURL: Multiple vulnerabilitiescert-bund · 2026-08-04
• highCVE-2026-69246: Guzzle is an extensible PHP HTTP client. Prior to 7.15.2 and 8.0.1, Guzzle gives a transport t…nvd · 2026-08-03

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