Security readout for executives and security teams
A vulnerable Mastodon server can be made to write files outside the intended media area when processing crafted media attachments. Because Mastodon may overwrite files it can access, impact can include service outage and remote code execution. The vendor patched this in 3.5.9, 4.0.5, and 4.1.3. Exposure is limited to Mastodon versions 3.5.0 through 3.5.8, 4.0.0 through 4.0.4, and 4.1.0 through 4.1.2. Public instances accepting media from users or federated interactions should be treated as higher priority until patched. Treat this as urgent for any exposed Mastodon instance. The vulnerability is remotely reachable with low privileges and has vendor-confirmed potential for outage and code execution. Patch before routine maintenance windows where possible. Mitigation focus: Upgrade Mastodon to 3.5.9, 4.0.5, 4.1.3, or a later fixed release.; Use the vendor advisory and release notes as the authoritative remediation source.; If patching is delayed, check Mastodon guidance for supported temporary controls..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CWE-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-36460 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 10 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
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CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H3.16Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
10CriticalVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/mastodon/mastodon/security/advisories/GHSA-9928-3cp5-93fmCVE reference · x_refsource_CONFIRM
- https://github.com/mastodon/mastodon/commit/dc8f1fbd976ae544720a4e07120d9a91b2722440CVE reference · x_refsource_MISC
- https://github.com/mastodon/mastodon/releases/tag/v3.5.9CVE reference · x_refsource_MISC
- https://github.com/mastodon/mastodon/releases/tag/v4.0.5CVE reference · x_refsource_MISC
- https://github.com/mastodon/mastodon/releases/tag/v4.1.3CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.