CVE-2026-63667

MEDIUMPre-NVD 6.56.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 6.5 from GitHub Security Advisory (severity: MODERATE) published 2026-09-02. A secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Elevated

Also known asEUVD-2026-60441 (ENISA EUVD) · GHSA-79qf-vqgc-7xx3 (GitHub Security Advisories)Source: ENISA EUVD

6.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 6.5Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

ApostropheCMS is an open-source Node.js content management system. Prior to 3.6.2, the import-export module in packages/import-export/lib/formats/gzip.js constructs an attachment source path from the attacker-controlled _id, name, and extension fields in aposAttachments.json without ensuring that the resolved path remains under the extracted attachments directory, allowing an authenticated contributor to import a crafted archive, read a host file with an allowed extension, and publish the copied file at an unauthenticated uploads URL. This issue is fixed in version 3.6.2.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
45
EG Risk 45/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity65% × 45%
Impact severity (EG Severity): CVSS 6.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
40th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (6.5): severity, escalated by confirmed exploitation. This CVE's 6.5 is its impact severity (EG Severity), not escalated.

EG Severity
6.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS. FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 17, 2026

Last Modified

November 2, 2026

Advisory Details (2)

Auto-updated Aug 17, 2026
Patch available. Sources: github, github_commit.
GitHub commit

commit 87cccf44a23d (apostrophecms/apostrophe)

Fix landed in apostrophecms/apostrophe commit 87cccf44a23d — awaiting tagged release

https://github.com/apostrophecms/apostrophe/commit/87cccf44a23d09420875ca8a3765eb3db843836a
GitHub advisoryMentions a patch (unverified)

Arbitrary file read via import-export attachment-name path traversal · Advisory · apostrophecms/apostrophe · GitHub

https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-79qf-vqgc-7xx3

Vendor Advisories for CVE-2026-63667(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
npm@apostrophecms/import-export @ 3.6.2 (fixes <= 3.6.1)—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFix by version rangeDependents
@apostrophecms/import-export—
  • every version up to 3.6.2: fixed in 3.6.2
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 34× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed its CVE.org record (CNA or CISA ADP). An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 132 rows on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 32 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 16:53 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  2. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  3. 2026-11-11 16:40 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  4. 2026-11-10 16:45 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  5. 2026-11-09 16:35 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  6. 2026-11-08 16:40 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  7. 2026-11-07 16:39 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  8. 2026-11-06 16:39 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  9. 2026-11-05 16:38 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  10. 2026-11-04 16:36 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  11. 2026-11-03 16:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  12. 2026-11-02 23:26 UTCEchelonGraph re-scored
  13. 2026-11-02 23:26 UTCGHSA enrichmentGHSA-79qf-vqgc-7xx3 · GitHub severity MODERATE · GitHub CVSS 6.5
  14. 2026-11-02 23:12 UTCEchelonGraph re-scored
  15. 2026-11-02 23:12 UTCGHSA enrichmentGHSA-79qf-vqgc-7xx3 · GitHub severity MODERATE · GitHub CVSS 6.5
  16. 2026-11-02 16:45 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  17. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  18. 2026-11-01 07:41 UTCGHSA enrichmentGHSA-79qf-vqgc-7xx3 · GitHub severity MODERATE · GitHub CVSS 6.5
  19. 2026-11-01 07:41 UTCEchelonGraph re-scored
  20. 2026-10-31 21:55 UTCOSV refresh
  21. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  22. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  23. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  24. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  25. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.5% · 39th percentile
Show 75 more
  1. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  2. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  3. 2026-10-25 14:13 UTCEchelonGraph re-scored
  4. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  5. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  6. 2026-10-22 19:49 UTCEchelonGraph re-scored
  7. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  8. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  9. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  10. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  11. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  12. 2026-10-18 03:23 UTCEchelonGraph re-scored
  13. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  14. 2026-10-16 16:43 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  15. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  16. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  17. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  18. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  19. 2026-10-12 15:48 UTCEchelonGraph re-scored
  20. 2026-10-11 19:33 UTCEchelonGraph re-scored
  21. 2026-10-11 16:48 UTCEchelonGraph re-scored
  22. 2026-10-11 14:10 UTCEchelonGraph re-scored
  23. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  24. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  25. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  26. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  27. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  28. 2026-10-07 08:51 UTCEchelonGraph re-scored
  29. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  30. 2026-10-06 09:02 UTCEchelonGraph re-scored
  31. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  32. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  33. 2026-10-03 17:47 UTCEchelonGraph re-scored
  34. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  35. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  36. 2026-10-02 09:14 UTCEchelonGraph re-scored
  37. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  38. 2026-10-01 09:27 UTCEchelonGraph re-scored
  39. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  40. 2026-09-30 09:58 UTCEchelonGraph re-scored
  41. 2026-09-29 06:57 UTCEchelonGraph re-scored
  42. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  43. 2026-09-28 07:31 UTCEchelonGraph re-scored
  44. 2026-09-27 08:05 UTCEchelonGraph re-scored
  45. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  46. 2026-09-25 02:01 UTCEchelonGraph re-scored
  47. 2026-09-23 20:55 UTCEchelonGraph re-scored
  48. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  49. 2026-09-22 21:30 UTCEchelonGraph re-scored
  50. 2026-09-21 22:06 UTCEchelonGraph re-scored
  51. 2026-09-20 22:41 UTCEchelonGraph re-scored
  52. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  53. 2026-09-19 23:15 UTCEchelonGraph re-scored
  54. 2026-09-18 23:50 UTCEchelonGraph re-scored
  55. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  56. 2026-09-18 00:18 UTCEchelonGraph re-scored
  57. 2026-09-16 23:05 UTCEchelonGraph re-scored
  58. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  59. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  60. 2026-09-15 19:15 UTCEchelonGraph re-scored
  61. 2026-09-13 19:09 UTCEchelonGraph re-scored
  62. 2026-09-12 19:44 UTCEchelonGraph re-scored
  63. 2026-09-11 20:19 UTCEchelonGraph re-scored
  64. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  65. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  66. 2026-09-10 20:54 UTCEchelonGraph re-scored
  67. 2026-09-09 03:38 UTCEchelonGraph re-scored
  68. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  69. 2026-09-08 00:42 UTCEchelonGraph re-scored
  70. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  71. 2026-09-07 01:16 UTCEchelonGraph re-scored
  72. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  73. 2026-09-06 01:51 UTCEchelonGraph re-scored
  74. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  75. 2026-09-05 02:26 UTCEchelonGraph re-scored

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-63667?
CVE-2026-63667 is a medium-severity vulnerability; its CVE record was published on August 17, 2026. ApostropheCMS is an open-source Node.js content management system. Prior to 3.6.2, the import-export module in packages/import-export/lib/formats/gzip.js constructs an attachment source path from the attacker-controlled _id, name, and extension fields in aposAttachments.json without ensuring that…
When was the CVE record for CVE-2026-63667 published?
The CVE record for CVE-2026-63667 was published on August 17, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of November 2, 2026; the record at its source may have been updated since.
Is CVE-2026-63667 actively exploited?
CVE-2026-63667 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (40th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-63667?
CVE-2026-63667 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-63667?
A fix for CVE-2026-63667 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-63667 are linked in the Vendor Advisories panel on this page.

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