PULSE
ESPT
FEED
ransommetaencryptor reclama a Christie Digital Systems · US · Technologyransommetaencryptor reclama a Daeah E&C · KR · Manufacturingransommetaencryptor reclama a DAEWON Chemical · KR · Manufacturingransommetaencryptor reclama a Wooshin Systems · KR · Technologyransommetaencryptor reclama a Proterial America, Ltd. · US · Manufacturingransommetaencryptor reclama a Hyundai E&C · KR · Manufacturingransommetaencryptor reclama a Pekin Insurance · US · Financial Servicesransomn0n reclama a Staples, Inc. / SBD Inc. · US · Retail & E-Commerceransomn0n reclama a Lampenwelt GmbH · DE · Retail & E-Commerceransomn0n reclama a Infutor Data Solutions · US · Technologyransomn0n reclama a Higginbotham · US · Professional Servicesransomrhysida reclama a Treuhand & Immobilien Abt AG · CH · Financial Servicesransomwhitearmor reclama a maersk · DK · Transportationransomqilin reclama a Acondistec · DE · Manufacturingransommetaencryptor reclama a Christie Digital Systems · US · Technologyransommetaencryptor reclama a Daeah E&C · KR · Manufacturingransommetaencryptor reclama a DAEWON Chemical · KR · Manufacturingransommetaencryptor reclama a Wooshin Systems · KR · Technologyransommetaencryptor reclama a Proterial America, Ltd. · US · Manufacturingransommetaencryptor reclama a Hyundai E&C · KR · Manufacturingransommetaencryptor reclama a Pekin Insurance · US · Financial Servicesransomn0n reclama a Staples, Inc. / SBD Inc. · US · Retail & E-Commerceransomn0n reclama a Lampenwelt GmbH · DE · Retail & E-Commerceransomn0n reclama a Infutor Data Solutions · US · Technologyransomn0n reclama a Higginbotham · US · Professional Servicesransomrhysida reclama a Treuhand & Immobilien Abt AG · CH · Financial Servicesransomwhitearmor reclama a maersk · DK · Transportationransomqilin reclama a Acondistec · DE · Manufacturing
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CVE WatchNov 7, 2026

CVE-2026-121491

The Fiber Admin WordPress plugin before 4.0.1 does not validate or escape a request header before writing it into a PHP file it regenerates

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: Nov 7, 2026 · Last modified: Nov 7, 2026

EPSS · 30d

Not enough EPSS history yet.

Technical description

The Fiber Admin WordPress plugin before 4.0.1 does not validate or escape a request header before writing it into a PHP file it regenerates on an unprotected admin hook, allowing unauthenticated attackers to execute arbitrary code when its custom database error page is enabled and they win a race against an administrator saving its settings.

Official references
Related CVEs

No related CVEs by CWE or product.