CVE-2026-96655

MEDIUMCISA KEVEPSS 76th pctl

4.3

CVSS v3

Description

Plex Media Server before 1.43.3.10861 allows an authenticated user to request arbitrary internal or external addresses via the '/video/:/transcode/universal' path parameter.

CWE-918Server-Side Request Forgery (SSRF)

How to fix

Remediation Available

Plex Media ServerWindows application

Affected:1.43.3.10861Fixed in:1.43.3.10861Plex, Inc.

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Exploit Intelligence

1.64%probability of exploitation in 30 days

76thpercentile

Elevated risk: more likely to be exploited than 76% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Remediation due: 2026-11-03

References

Third-Party Advisory3

Government Resource1

cisa.gov

Release Notes1

forums.plex.tv

Related Vulnerabilities

Other CWE-918 (Server-Side Request Forgery (SSRF)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-21893	High	8.2	100%	KEV + Ransom	-
CVE-2021-40438	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2021-34473	Critical	9.1	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2021-26855	Critical	9.1	100%	KEV + Ransom	Fix
CVE-2022-41040	High	8.8	100%	KEV + Ransom	Fix

Common questions

How do I fix CVE-2026-96655?

Upgrade Plex Media Server to 1.43.3.10861 or later.

Is CVE-2026-96655 being actively exploited?

Yes. CVE-2026-96655 is listed in the CISA Known Exploited Vulnerabilities catalog, which means exploitation has been observed in the wild. US federal agencies were required to remediate it by 2026-11-03. Treat it as a priority whatever its CVSS score says.

How severe is CVE-2026-96655?

CVE-2026-96655 has a CVSS v3 base score of 4.3, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-96655 affect?

Published advisories record a fix for Plex Media Server (Windows application). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This vulnerability is actively exploited in the wild

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-10-21.