Security readout for executives and security teams
Plain-English summary
Soft Serve Git servers before 0.11.3 can let someone log in as another user, including an administrator, through an SSH authentication flaw. If exposed, this could give unauthorized access to repositories and administrative functions. The vendor advisory says 0.11.3 fixes the issue.
Executive priority
Treat as urgent for any internet-facing or broadly accessible Soft Serve deployment. The flaw can undermine identity controls and repository integrity. Prioritize upgrade and access restriction over routine patch cycles.
Technical view
In Soft Serve 0.11.2 and below, user identity is stored in SSH session context during the public-key offer phase and is not cleared after that authentication attempt fails. A later valid authentication can inherit the offered identity, enabling impersonation. The issue is classified as CWE-289 with CVSS 4.0 score 8.1.
Likely exposure
Organizations running self-hosted charmbracelet Soft Serve versions below 0.11.3 are affected, especially if SSH access is reachable by untrusted users or networks. The sources do not identify hosted services or other products as affected.
Exploitation context
The advisory describes a remote, low-complexity authentication bypass requiring no prior privileges or user interaction. The CVE record is not marked in KEV, and the provided sources do not report active exploitation or public weaponized exploitation.
Researcher notes
Public sources include the GitHub advisory, fixing commit, release tag, and CVE record. Evidence supports affected versions below 0.11.3 and a fixed release at 0.11.3. No source in the bundle confirms exploitation in the wild.
Mitigation direction
- Upgrade Soft Serve to version 0.11.3 or later.
- Restrict SSH access to trusted networks until upgraded.
- Review vendor advisory and release notes for environment-specific guidance.
- Rotate or review privileged access if compromise is suspected.
Validation and detection
- Inventory all Soft Serve instances and record versions.
- Confirm affected instances are below version 0.11.3.
- Verify upgraded systems report version 0.11.3 or later.
- Review SSH and Soft Serve logs for suspicious impersonation indicators.
Public sources used
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
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-289: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-24058 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
- High
- CVSS
- 8.1 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
8.1HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/charmbracelet/soft-serve/security/advisories/GHSA-pchf-49fh-w34rCVE reference · x_refsource_CONFIRM
- https://github.com/charmbracelet/soft-serve/commit/8539f9ad39918b67d612a35785a2b4326efc8741CVE reference · x_refsource_MISC
- https://github.com/charmbracelet/soft-serve/releases/tag/v0.11.3CVE 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.
Authentication Bypass by Alternate Name
Authentication Bypass by Alternate Name represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.