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CVE-2023-30626

26
FAUCET Score

CVE-2023-30626 is a directory traversal vulnerability affecting Jellyfin versions 10.8.0 through 10.8.9, specifically within the /ClientLog/Document endpoint of the ClientLogController. This flaw, when chained with a cross-site scripting vulnerability (CVE-2023-30627), can lead to arbitrary file write and remote code execution. With a CVSS score of 8.1 (HIGH), this vulnerability has a network attack vector, low attack complexity, and high impact on confidentiality and integrity. There is no known active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 10.8.0, < 10.8.10CPE matchmatch criteria
cpe:2.3:a:jellyfin:jellyfin:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.97%
Probability of exploitation in next 30 days
EPSS Percentile
78.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0197 is in the 77th percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
nugetpatch availablevia ghsa
Product: Jellyfin.ControllerFixed in: 10.8.10

Vendor Advisories (1)

nugetGHSA-9p5f-5x8v-x65mhigh

Directory traversal + file write causing arbitrary code execution

Apr 24, 2023

References

github.com / jellyfin/jellyfin/blob/22d880662283980dec994cd7d35fe269613bfce3/Jellyfin.Api/Controllers/ClientLogController.cs
ExploitVendor Advisory
github.com / jellyfin/jellyfin/commit/82ad2633fdfb1c37a158057c7935f83e1129eda7
Patch
github.com / jellyfin/jellyfin/pull/5918
PatchVendor Advisory
github.com / jellyfin/jellyfin/releases/tag/v10.8.10
Release Notes
github.com / jellyfin/jellyfin/security/advisories/GHSA-9p5f-5x8v-x65m
ExploitPatchVendor Advisory
github.com / jellyfin/jellyfin-web/security/advisories/GHSA-89hp-h43h-r5pq
Vendor Advisory