Note Mark is an open-source note-taking application. Prior to version 0.19.5, GET /api/books/{bookID}/notes is an unauthenticated endpoint that accepts a "deleted" query parameter. When the request is ?deleted=true, the service runs the query with Unscoped() (bypassing GORM's soft-delete scope) but keeps the read-authorization clause as "owner_id = ? OR is_public = ?". As a result, any unauthenticated caller can enumerate the metadata of soft-deleted ("trashed") notes belonging to any public book — notes the owner explicitly deleted and expected to be removed from public view. This issue has been patched in version 0.19.5.
CVE-2026-50554
MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence
This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 84% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, secondary
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.3
- EG Score
- 5.3(medium)
- EG Risk
- 28(Track)EG Risk 28/100SSVC: Track
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 computedSeverity53% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 16%
- KEV
- Not listed
Published
July 9, 2026
Last Modified
September 9, 2026
Advisory Details (3)
Auto-updated Sep 3, 2026🔬 Proof of concept available. Patch available. Sources: github, github_commit, github_release.
github_release Patch Available
V0.19.5
Patch available: enchant97/note-mark v0.19.5
https://github.com/enchant97/note-mark/releases/tag/v0.19.5github_commit Patch Available
commit 9c9b72740f22 (enchant97/note-mark)
Patch available: enchant97/note-mark v0.19.5 (contains commit 9c9b72740f22)
https://github.com/enchant97/note-mark/commit/9c9b72740f22a06131a8f64b53bb08e3b05b81a6github Patch Available🟡 PoC Available
Unauthenticated disclosure of soft-deleted note metadata via deleted=true on public books in note-mark · Advisory · enchant97/note-mark · GitHub
https://github.com/enchant97/note-mark/security/advisories/GHSA-588f-fvcv-xhvfVendor Advisories for CVE-2026-50554(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(1 across 1 ecosystem)
Go(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| github.com/enchant97/note-mark/backend | — | 0.0.0-20260601210758-9c9b72740f22 | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 7× in last 7d / 16× 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.
- 2026-09-18 19:28 UTCEPSS rescore
- 2026-09-18 05:37 UTCEG score recompute
- 2026-09-16 14:08 UTCEPSS rescore
- 2026-09-16 05:15 UTCEPSS rescore
- 2026-09-14 07:58 UTCEG score recompute
- 2026-09-13 16:47 UTCEPSS rescore
- 2026-09-13 08:20 UTCEG score recompute
- 2026-09-12 03:25 UTCEG score recompute
- 2026-09-11 14:53 UTCEPSS rescore
- 2026-09-10 09:35 UTCEPSS rescore
- 2026-09-09 22:57 UTCEG score recompute
- 2026-09-08 22:01 UTCEPSS rescore
- 2026-09-07 16:01 UTCEPSS rescore
- 2026-09-06 13:47 UTCEPSS rescore
- 2026-09-05 22:36 UTCEG score recompute
- 2026-09-03 16:33 UTCEG score recompute
- 2026-07-30 12:14 UTCEG score recompute
- 2026-07-26 12:20 UTCEG score recompute
- 2026-07-23 03:18 UTCEG score recompute
- 2026-07-09 13:45 UTCEG score recompute
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2026-50554?
CVE-2026-50554 is a medium vulnerability published on July 9, 2026. Note Mark is an open-source note-taking application. Prior to version 0.19.5, GET /api/books/{bookID}/notes is an unauthenticated endpoint that accepts a "deleted" query parameter. When the request is ?deleted=true, the service runs the query with Unscoped() (bypassing GORM's soft-delete scope) but…
When was CVE-2026-50554 disclosed?
CVE-2026-50554 was first published in the National Vulnerability Database on July 9, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-50554 actively exploited?
CVE-2026-50554 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 84.1% of all scored CVEs.
What is the CVSS score of CVE-2026-50554?
CVE-2026-50554 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-50554?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-50554, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-50554
Is Your Infrastructure Affected by CVE-2026-50554?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.