CVE-2026-71553

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 76% 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
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%CVSS: 7.1Exploit: None knownExposed: 0

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

ApostropheCMS is an open-source Node.js content management system. In 4.32.0 and earlier, PATCH /api/v1/article/:id accepts the inherited path toString.call and passes it through the utility module to apos.util.set() and apos.util.get(), allowing an authenticated editor to overwrite the shared Object.prototype.toString function's call property and cause a persistent process-wide denial of service until restart.

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: 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
Severity71% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
24%
KEV
Not listed

Published

August 17, 2026

Last Modified

September 9, 2026

Advisory Details (2)

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

2nd-order prototype pollution via PATCH leading to single-request persistent DoS · Advisory · apostrophecms/apostrophe · GitHub

https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-vmg4-6gfg-83qx
github_commit

commit 5a3746aaed49 (apostrophecms/apostrophe)

Fix landed in apostrophecms/apostrophe commit 5a3746aaed49 — awaiting tagged release

https://github.com/apostrophecms/apostrophe/commit/5a3746aaed49761e171c2cbfe793267c959829fd

Vendor Advisories for CVE-2026-71553(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 / EcosystemFixed in / PatchReleasedSource
npmapostrophe—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 rangeFixed inDependents
apostrophe———

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 26× in last 7d / 81× 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. 2026-09-19 12:36 UTCGHSA enrichment
  2. 2026-09-19 00:39 UTCEG score recompute
  3. 2026-09-19 00:39 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 12:42 UTCGHSA enrichment
  6. 2026-09-18 00:18 UTCEG score recompute
  7. 2026-09-18 00:18 UTCGHSA enrichment
  8. 2026-09-17 11:07 UTCGHSA enrichment
  9. 2026-09-16 23:05 UTCEG score recompute
  10. 2026-09-16 23:05 UTCGHSA enrichment
  11. 2026-09-16 14:08 UTCEPSS rescore
  12. 2026-09-16 10:14 UTCEG score recompute
  13. 2026-09-16 10:14 UTCGHSA enrichment
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-15 21:27 UTCGHSA enrichment
  16. 2026-09-15 09:19 UTCEG score recompute
  17. 2026-09-15 09:19 UTCGHSA enrichment
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-14 21:22 UTCGHSA enrichment
  20. 2026-09-14 09:14 UTCGHSA enrichment
  21. 2026-09-13 21:17 UTCEG score recompute
  22. 2026-09-13 21:17 UTCGHSA enrichment
  23. 2026-09-13 09:20 UTCGHSA enrichment
  24. 2026-09-12 21:24 UTCEG score recompute
  25. 2026-09-12 21:24 UTCGHSA enrichment
Show 65 more
  1. 2026-09-12 15:02 UTCEPSS rescore
  2. 2026-09-12 09:27 UTCGHSA enrichment
  3. 2026-09-11 21:30 UTCEG score recompute
  4. 2026-09-11 21:30 UTCGHSA enrichment
  5. 2026-09-11 14:53 UTCEPSS rescore
  6. 2026-09-11 09:34 UTCGHSA enrichment
  7. 2026-09-10 21:38 UTCGHSA enrichment
  8. 2026-09-10 09:42 UTCEG score recompute
  9. 2026-09-10 09:42 UTCGHSA enrichment
  10. 2026-09-10 09:35 UTCEPSS rescore
  11. 2026-09-09 21:28 UTCGHSA enrichment
  12. 2026-09-09 15:38 UTCGHSA enrichment
  13. 2026-09-09 03:38 UTCEG score recompute
  14. 2026-09-09 03:38 UTCGHSA enrichment
  15. 2026-09-08 22:01 UTCEPSS rescore
  16. 2026-09-08 04:07 UTCGHSA enrichment
  17. 2026-09-07 16:11 UTCGHSA enrichment
  18. 2026-09-07 00:38 UTCEG score recompute
  19. 2026-09-07 00:38 UTCGHSA enrichment
  20. 2026-09-06 13:48 UTCEPSS rescore
  21. 2026-09-06 12:30 UTCGHSA enrichment
  22. 2026-09-06 00:33 UTCEG score recompute
  23. 2026-09-06 00:33 UTCGHSA enrichment
  24. 2026-09-05 12:36 UTCGHSA enrichment
  25. 2026-09-05 00:13 UTCEG score recompute
  26. 2026-09-05 00:13 UTCGHSA enrichment
  27. 2026-09-04 10:34 UTCEG score recompute
  28. 2026-09-04 10:33 UTCGHSA enrichment
  29. 2026-09-04 05:07 UTCEPSS rescore
  30. 2026-09-03 22:37 UTCGHSA enrichment
  31. 2026-09-03 10:06 UTCGHSA enrichment
  32. 2026-09-02 22:09 UTCEG score recompute
  33. 2026-09-02 22:09 UTCGHSA enrichment
  34. 2026-09-02 14:12 UTCEPSS rescore
  35. 2026-09-01 21:40 UTCEG score recompute
  36. 2026-09-01 13:54 UTCEPSS rescore
  37. 2026-09-01 09:44 UTCEG score recompute
  38. 2026-09-01 04:40 UTCEPSS rescore
  39. 2026-08-31 06:51 UTCEG score recompute
  40. 2026-08-30 19:17 UTCEPSS rescore
  41. 2026-08-30 06:58 UTCEG score recompute
  42. 2026-08-30 01:22 UTCEPSS rescore
  43. 2026-08-29 05:24 UTCEG score recompute
  44. 2026-08-28 21:42 UTCEPSS rescore
  45. 2026-08-27 19:25 UTCEG score recompute
  46. 2026-08-26 19:26 UTCEG score recompute
  47. 2026-08-26 14:47 UTCEPSS rescore
  48. 2026-08-25 19:31 UTCEG score recompute
  49. 2026-08-25 13:49 UTCEPSS rescore
  50. 2026-08-24 19:36 UTCEG score recompute
  51. 2026-08-23 07:48 UTCEG score recompute
  52. 2026-08-23 00:19 UTCEPSS rescore
  53. 2026-08-22 07:56 UTCEG score recompute
  54. 2026-08-21 23:49 UTCEPSS rescore
  55. 2026-08-21 08:01 UTCEG score recompute
  56. 2026-08-20 22:56 UTCEPSS rescore
  57. 2026-08-19 20:11 UTCEG score recompute
  58. 2026-08-19 17:04 UTCEPSS rescore
  59. 2026-08-18 20:19 UTCEG score recompute
  60. 2026-08-18 13:49 UTCEPSS rescore
  61. 2026-08-18 13:49 UTCEPSS rescore
  62. 2026-08-18 08:18 UTCEG score recompute
  63. 2026-08-17 20:20 UTCEG score recompute
  64. 2026-08-17 20:11 UTCEG score recompute
  65. 2026-08-17 20:09 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-71553?
CVE-2026-71553 is a high vulnerability published on August 17, 2026. ApostropheCMS is an open-source Node.js content management system. In 4.32.0 and earlier, PATCH /api/v1/article/:id accepts the inherited path toString.call and passes it through the utility module to apos.util.set() and apos.util.get(), allowing an authenticated editor to overwrite the shared…
When was CVE-2026-71553 disclosed?
CVE-2026-71553 was first published in the National Vulnerability Database on August 17, 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-2026-71553 actively exploited?
CVE-2026-71553 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 75.7% of all scored CVEs.
What is the CVSS score of CVE-2026-71553?
CVE-2026-71553 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-71553?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-71553, 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

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