Security readout for executives and security teams
Plain-English summary
Horilla HRM 1.4.0 contains an XSS filter bypass in project names. A highly privileged attacker could place crafted content that runs in another user’s browser after interaction, potentially redirecting users, loading external JavaScript, or stealing CSRF tokens. The vendor advisory states this is fixed in 1.5.0.
Executive priority
Treat as a timely upgrade item, not an emergency based on current evidence. The flaw can affect administrator sessions, but exploitation requires privileged access and user interaction. Prioritize internet-facing or broadly accessible Horilla deployments first.
Technical view
CVE-2026-24037 is a CWE-79 cross-site scripting issue in Horilla’s has_xss() validation. The regex-based checks are incomplete and context-agnostic, allowing bypasses through project name input. CVSS is 4.8: network reachable, low complexity, high privileges required, user interaction required, changed scope, low confidentiality and integrity impact.
Likely exposure
Organizations running horilla-opensource Horilla version 1.4.0 are exposed. The listed affected range is >= 1.4.0 and < 1.5.0. Exposure is most relevant where untrusted or semi-trusted privileged users can create or modify project names.
Exploitation context
No active exploitation is indicated in the provided sources, and the CVE is not listed as KEV. Exploitation requires high privileges and user interaction. The reported impact includes malicious redirects, external JavaScript execution, and CSRF token theft that could support follow-on CSRF attacks against administrators.
Researcher notes
The advisory attributes the weakness to regex-based XSS detection rather than context-aware output handling. Available sources do not provide broader affected branches, exploit-in-the-wild evidence, or additional mitigations beyond the 1.5.0 fix. Avoid assuming impact for versions outside the stated range.
Mitigation direction
- Upgrade Horilla to version 1.5.0 or later.
- Review the GitHub advisory and release notes for vendor-specific guidance.
- Restrict project-management privileges until the upgrade is complete.
- Monitor for suspicious project names or unexpected redirects.
Validation and detection
- Inventory Horilla deployments and identify installed versions.
- Confirm whether any instance runs version 1.4.0.
- Verify successful upgrade to version 1.5.0 or later.
- Review project name fields for unusual script-like or redirect content.
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-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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 lookupCVE-2026-24037 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
- Medium
- CVSS
- 4.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
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:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N1.72.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.8MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/horilla-opensource/horilla/security/advisories/GHSA-rqw5-fjm4-rgvmCVE reference · x_refsource_CONFIRM
- https://github.com/horilla-opensource/horilla/releases/tag/1.5.0CVE 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.