PULSE
ES
FEED
ransomsilentransomgroup reclama a M... M... · Not Foundransomsilentransomgroup reclama a P... H... · Not Foundransomglobal secret group reclama a Graves Fireplaces, Inc. · US · Manufacturingransomincransom reclama a centralrogers.com · US · Otherransomdark project reclama a Asensus Surgical · US · Healthcareransomdark project reclama a The Excalibur Group · US · Not Foundransomsilentransomgroup reclama a P...S...R... · Not Foundransomaurora reclama a Duarte Nursery, Inc. · US · Agriculture and Food Productionransomn0n reclama a 51Ridge (Newark NJ hosting/IT) · US · Technologyransombooba project reclama a Research Foundation of The City University of New York · US · Educationransombooba project reclama a Chicago Vein Institute · US · Healthcareransombooba project reclama a Pearland Pediatrics · US · Healthcareransombooba project reclama a City of Mt. Angel, Oregon · US · Government & Defenseransombooba project reclama a City Hall - Everett, MA · US · Government & Defenseransomsilentransomgroup reclama a M... M... · Not Foundransomsilentransomgroup reclama a P... H... · Not Foundransomglobal secret group reclama a Graves Fireplaces, Inc. · US · Manufacturingransomincransom reclama a centralrogers.com · US · Otherransomdark project reclama a Asensus Surgical · US · Healthcareransomdark project reclama a The Excalibur Group · US · Not Foundransomsilentransomgroup reclama a P...S...R... · Not Foundransomaurora reclama a Duarte Nursery, Inc. · US · Agriculture and Food Productionransomn0n reclama a 51Ridge (Newark NJ hosting/IT) · US · Technologyransombooba project reclama a Research Foundation of The City University of New York · US · Educationransombooba project reclama a Chicago Vein Institute · US · Healthcareransombooba project reclama a Pearland Pediatrics · US · Healthcareransombooba project reclama a City of Mt. Angel, Oregon · US · Government & Defenseransombooba project reclama a City Hall - Everett, MA · US · Government & Defense
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CVE WatchOct 20, 2026

CVE-2026-86409

Setting `CURLOPT_AWS_SIGV4` to NULL but does not disable SigV4 authentication, contrary to expectations and documentation. A subsequent tran

CVSS

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No CVSS

EPSS

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KEV

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Exploit Today

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0-100

Published: Oct 20, 2026 · Last modified: Oct 20, 2026

EPSS · 30d

Not enough EPSS history yet.

Technical description

Setting `CURLOPT_AWS_SIGV4` to NULL but does not disable SigV4 authentication, contrary to expectations and documentation. A subsequent transfer on the same handle still sends an `Authorization: AWS4-HMAC-SHA256` header to whatever URL isset next, leaking state information.

Official references
Related CVEs

No related CVEs by CWE or product.