CVE-2026-66002

MEDIUMPre-NVD 6.96.9—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5%, top 62% 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
Trending — 3 sources updated this week
6.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.9Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Frappe is a full-stack web application framework. Prior to 15.115.0 and 16.27.0, the public request-data web form and PersonalDataDownloadRequest class in frappe/website/doctype/personal_data_download_request/personal_data_download_request.py return distinguishable response shapes for registered and unregistered email addresses, including the user_name field and persistence behavior. A remote attacker can compare the responses to enumerate registered users. This issue is fixed in versions 15.115.0 and 16.27.0.

CVSS v3
6.9
EG Score
6.9(medium)
EG Risk
46(Track)
EG Risk 46/100SSVC: 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 computed
Severity69% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
38%
KEV
Not listed

Published

August 20, 2026

Last Modified

August 21, 2026

Advisory Details (9)

Auto-updated Aug 20, 2026
Patch available. Sources: github_pr, github_commit, github_release, github.
github_release Patch Available

v16.27.0

Patch available: frappe/frappe v16.27.0

https://github.com/frappe/frappe/releases/tag/v16.27.0
github_release Patch Available

v15.115.0

Patch available: frappe/frappe v15.115.0

https://github.com/frappe/frappe/releases/tag/v15.115.0
github_commit Patch Available

commit 4b32a4e0072e (frappe/frappe)

Patch available: frappe/frappe v16.27.0 (contains commit 4b32a4e0072e)

https://github.com/frappe/frappe/commit/4b32a4e0072e61ce0abcb0d09cfd1f14724fe896
github_commit

commit 47a396ec59f5 (frappe/frappe)

Fix landed in frappe/frappe commit 47a396ec59f5 — awaiting tagged release

https://github.com/frappe/frappe/commit/47a396ec59f5362029feb349eb2b9d10a21afcf8
github_commit Patch Available

commit 30fe0b4118ff (frappe/frappe)

Patch available: frappe/frappe v15.115.0 (contains commit 30fe0b4118ff)

https://github.com/frappe/frappe/commit/30fe0b4118ff94c95c239dce4bc74ec4ca10a827
github_pr Patch Available

fix(pddr): keep response agnostic (backport #40787)

Patch available: frappe/frappe v16.27.0 (PR #40815 merged 2026-07-14)

https://github.com/frappe/frappe/pull/40815
github_pr Patch Available

fix(pddr): keep response agnostic (backport #40787)

Patch available: frappe/frappe v15.115.0 (PR #40814 merged 2026-07-14)

https://github.com/frappe/frappe/pull/40814
github_pr

fix(pddr): keep response agnostic

Fix merged in frappe/frappe PR #40787 on 2026-07-13 — awaiting tagged release

https://github.com/frappe/frappe/pull/40787
github Patch Available

User Enumeration via PDDR · Advisory · frappe/frappe · GitHub

https://github.com/frappe/frappe/security/advisories/GHSA-c2xv-c53h-qvr5

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 12× 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.

  1. 2026-08-26 01:22 UTCEG score recompute
  2. 2026-08-25 13:49 UTCEPSS rescore
  3. 2026-08-25 00:38 UTCEG score recompute
  4. 2026-08-23 23:53 UTCEG score recompute
  5. 2026-08-23 00:19 UTCEPSS rescore
  6. 2026-08-22 23:10 UTCEG score recompute
  7. 2026-08-21 23:49 UTCEPSS rescore
  8. 2026-08-21 22:26 UTCEG score recompute
  9. 2026-08-21 21:54 UTCEG score recompute
  10. 2026-08-20 19:18 UTCEG score recompute
  11. 2026-08-20 18:32 UTCEG score recompute
  12. 2026-08-20 18:31 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-66002?
CVE-2026-66002 is a medium vulnerability published on August 20, 2026. Frappe is a full-stack web application framework. Prior to 15.115.0 and 16.27.0, the public request-data web form and PersonalDataDownloadRequest class in frappe/website/doctype/personaldatadownloadrequest/personaldatadownloadrequest.py return distinguishable response shapes for registered and…
When was CVE-2026-66002 disclosed?
CVE-2026-66002 was first published in the National Vulnerability Database on August 20, 2026, with the most recent update on August 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-66002 actively exploited?
CVE-2026-66002 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 61.6% of all scored CVEs.
What is the CVSS score of CVE-2026-66002?
CVE-2026-66002 has a CVSS v3 base score of 6.9 (NVD).
How do I remediate CVE-2026-66002?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-66002, 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.

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