CVE-2026-43891

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 73% 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, nvd
Elevated
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

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

changedetection.io is a free open source web page change detection tool. Prior to 0.55.1, the vulnerability is caused by trusting attacker-controlled snapshot paths restored from backup files. The vulnerable flow starts in the backup restore logic. When a backup ZIP is restored, the application extracts the archive and copies each restored watch UUID directory directly into the live datastore using shutil.copytree(entry.path, dst_dir). This preserves attacker-controlled files inside the restored watch directory, including history.txt. After restore, the application parses history.txt in the watch history property and returns the contents of the targeted local file. This vulnerability is fixed in 0.55.1.

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
27.5%
KEV
Not listed

Published

May 12, 2026

Last Modified

May 15, 2026

Advisory Details (2)

Auto-updated May 13, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

OIDC refresh token flow bypasses authorization revocation, account disabling, and group restrictions · Advisory · pocket-id/pocket-id · GitHub

https://github.com/pocket-id/pocket-id/security/advisories/GHSA-w6p7-2fxx-4f44
github Patch Available🟡 PoC Available

Arbitrary Local File Read via crafted backup restore · Advisory · dgtlmoon/changedetection.io · GitHub

https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-8757-69j2-hx56

Vendor Advisories for CVE-2026-43891(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)
PyPI(1)
PackageVulnerable rangeFixed inDependents
changedetection-io0.38.2 ... 0.54.9 (196 versions)0.55.1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 45× 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. 2026-07-11 08:27 UTCEPSS rescore
  2. 2026-07-09 19:10 UTCEPSS rescore
  3. 2026-07-08 15:16 UTCEPSS rescore
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  14. 2026-06-28 01:27 UTCEG score recompute
  15. 2026-06-27 09:35 UTCEG score recompute
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  17. 2026-06-26 20:44 UTCEG score recompute
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  19. 2026-06-25 13:49 UTCEPSS rescore
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  1. 2026-06-21 14:56 UTCEPSS rescore
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  3. 2026-06-19 19:25 UTCEPSS rescore
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  6. 2026-06-17 21:54 UTCEG score recompute
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  8. 2026-06-16 23:34 UTCEG score recompute
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  11. 2026-06-15 17:49 UTCEPSS rescore
  12. 2026-06-15 02:17 UTCEG score recompute
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  19. 2026-06-12 14:24 UTCEG score recompute
  20. 2026-06-12 01:35 UTCEG score recompute
  21. 2026-06-11 14:00 UTCEPSS rescore
  22. 2026-06-11 12:45 UTCEG score recompute
  23. 2026-06-10 23:54 UTCEG score recompute
  24. 2026-06-10 22:18 UTCEPSS rescore
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  27. 2026-06-10 11:01 UTCEG score recompute
  28. 2026-06-09 22:11 UTCEG score recompute
  29. 2026-06-09 09:04 UTCEG score recompute
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  31. 2026-06-08 14:17 UTCEPSS rescore
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  33. 2026-06-08 05:18 UTCEG score recompute
  34. 2026-06-07 16:29 UTCEG score recompute
  35. 2026-06-07 15:25 UTCEPSS rescore
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  37. 2026-06-07 03:39 UTCEG score recompute
  38. 2026-06-06 14:49 UTCEG score recompute
  39. 2026-06-06 13:47 UTCEPSS rescore
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  41. 2026-06-06 01:58 UTCEG score recompute
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  47. 2026-06-04 13:12 UTCEPSS rescore
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  49. 2026-06-04 11:25 UTCEG score recompute
  50. 2026-06-03 22:34 UTCEG score recompute
  51. 2026-06-03 09:44 UTCEG score recompute
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  53. 2026-06-02 20:13 UTCEPSS rescore
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  56. 2026-06-01 13:52 UTCEPSS rescore
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  70. 2026-05-26 07:18 UTCEPSS rescore
  71. 2026-05-23 00:07 UTCEG score recompute
  72. 2026-05-21 22:43 UTCEPSS rescore
  73. 2026-05-20 22:38 UTCEPSS rescore
  74. 2026-05-20 12:46 UTCEG score recompute
  75. 2026-05-20 11:22 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-43891?
CVE-2026-43891 is a high vulnerability published on May 12, 2026. changedetection.io is a free open source web page change detection tool. Prior to 0.55.1, the vulnerability is caused by trusting attacker-controlled snapshot paths restored from backup files. The vulnerable flow starts in the backup restore logic. When a backup ZIP is restored, the application…
When was CVE-2026-43891 disclosed?
CVE-2026-43891 was first published in the National Vulnerability Database on May 12, 2026, with the most recent update on May 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43891 actively exploited?
CVE-2026-43891 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 27.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-43891?
CVE-2026-43891 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-43891?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43891, 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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