Phproject before 1.8.7 contains a missing object-level authorization vulnerability in the REST API issue endpoints (single_get, single_comments, single_comments_post) that allows authenticated API key holders to bypass the security.restrict_access confidentiality control by never invoking the allowAccess() authorization routine. Attackers can use a valid API key to read restricted issue contents and comments, including owner and author email addresses, and post unauthorized comments to issues they should not have access to.
CVE-2026-104991
HIGHPre-NVD 7.17.1—Trending — 4 sources updated this week
EchelonGraph scoreHIGH confidence
Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-10-02. A secondary CVSS source baseline 7.1; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.1Exploit: None knownExposed services: Not assessed
A fix is available — apply it.
- CVSS v3
- 7.1
- EG Score
- 7.1HIGHhigh confidence
- EG Risk
- 37EG Risk 37/100CISA SSVC
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity71% × 45%Exploitation0% × 40%Automatability30% × 15%CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high. - EPSS PROB
- 0.2%
- EPSS %ILE
- 11th
- KEV
- Not listed
CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table
Published
October 2, 2026
Last Modified
October 2, 2026
Advisory Details (3)
Auto-updated Oct 2, 2026🔬 Proof of concept available. Patch available. Sources: github, github_release.
generic
Phproject < 1.8.7 Missing Authorization via Issues REST API | Advisories | VulnCheck
https://www.vulncheck.com/advisories/phproject-missing-authorization-via-issues-rest-apigithub_release Patch Available
v1.8.7
Patch available: Alanaktion/phproject v1.8.7
https://github.com/Alanaktion/phproject/releases/tag/v1.8.7github Patch Available🟡 PoC Available
Missing Object-Level Authorization in Phproject REST API Issue Endpoints · Advisory · Alanaktion/phproject · GitHub
https://github.com/Alanaktion/phproject/security/advisories/GHSA-mpq9-v47x-3hw8Vendor Advisories for CVE-2026-104991(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 9× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-10-04 11:58 UTCGHSA enrichment
- 2026-10-03 22:47 UTCEG score recompute
- 2026-10-03 22:47 UTCGHSA enrichment
- 2026-10-03 14:25 UTCEPSS rescore
- 2026-10-03 09:35 UTCEG score recompute
- 2026-10-03 09:34 UTCGHSA enrichment
- 2026-10-02 20:20 UTCEG score recompute
- 2026-10-02 19:46 UTCEG score recompute
- 2026-10-02 19:45 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2026-104991?
CVE-2026-104991 is a high vulnerability published on October 2, 2026. Phproject before 1.8.7 contains a missing object-level authorization vulnerability in the REST API issue endpoints (singleget, singlecomments, singlecommentspost) that allows authenticated API key holders to bypass the security.restrict_access confidentiality control by never invoking the…
When was CVE-2026-104991 disclosed?
CVE-2026-104991 was first published on October 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-104991 actively exploited?
CVE-2026-104991 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (11th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-104991?
CVE-2026-104991 has a CVSS base score of 7.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-104991?
A fix for CVE-2026-104991 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-104991 are linked in the Vendor Advisories panel on this page.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-104991
Is Your Infrastructure Affected by CVE-2026-104991?
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