CVE-2017-1000423

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-14. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 9.8Exploit: None knownExposed: 0

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

b2evolution version 6.6.0 - 6.8.10 is vulnerable to input validation (backslash and single quote escape) in basic install functionality resulting in unauthenticated attacker gaining PHP code execution on the victim's setup.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
50(Track)
EG Risk 50/100SSVC: 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
Severity98% × 45%
Exploitation2% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
83%
KEV
Not listed

Published

January 2, 2018

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated Sep 5, 2026
Patch available. Sources: github_commit.
github_commit Patch Available

commit b899d654d931 (b2evolution/b2evolution)

Patch available: b2evolution/b2evolution 6-9-4 (contains commit b899d654d931)

https://github.com/b2evolution/b2evolution/commit/b899d654d931f3bf3cfbbdd71e0d1a0f3a16d04c
github_commit Patch Available

commit 0096a3ebc85f (b2evolution/b2evolution)

Patch available: b2evolution/b2evolution 6-9-4 (contains commit 0096a3ebc85f)

https://github.com/b2evolution/b2evolution/commit/0096a3ebc85f6aadbda2c4427cd092a538b161d2

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 4× in last 7d / 20× 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.

Showing the most recent 100 of 125 total refreshes for this CVE.

  1. 2026-09-07 15:56 UTCEPSS rescore
  2. 2026-09-04 13:56 UTCEPSS rescore
  3. 2026-09-02 14:07 UTCEPSS rescore
  4. 2026-09-01 13:48 UTCEPSS rescore
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  23. 2026-08-07 04:27 UTCOSV refresh
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  1. 2026-08-04 15:05 UTCEPSS rescore
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  11. 2026-07-23 14:15 UTCEPSS rescore
  12. 2026-07-23 01:25 UTCEG score recompute
  13. 2026-07-22 22:04 UTCEG score recompute
  14. 2026-07-22 14:04 UTCEPSS rescore
  15. 2026-07-21 20:18 UTCOSV refresh
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  25. 2026-07-16 16:59 UTCEPSS rescore
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  27. 2026-07-15 16:54 UTCEPSS rescore
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  43. 2026-07-04 15:56 UTCOSV refresh
  44. 2026-07-04 06:28 UTCEPSS rescore
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  46. 2026-06-30 23:19 UTCEPSS rescore
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  48. 2026-06-28 14:04 UTCEPSS rescore
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  50. 2026-06-27 03:05 UTCEPSS rescore
  51. 2026-06-25 13:47 UTCEPSS rescore
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  67. 2026-06-15 17:45 UTCEPSS rescore
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  70. 2026-06-13 22:57 UTCEPSS rescore
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  72. 2026-06-12 23:09 UTCEPSS rescore
  73. 2026-06-11 13:57 UTCEPSS rescore
  74. 2026-06-08 14:14 UTCEPSS rescore
  75. 2026-06-07 15:22 UTCEPSS rescore

Frequently asked(5)

What is CVE-2017-1000423?
CVE-2017-1000423 is a critical vulnerability published on January 2, 2018. b2evolution version 6.6.0 - 6.8.10 is vulnerable to input validation (backslash and single quote escape) in basic install functionality resulting in unauthenticated attacker gaining PHP code execution on the victim's setup.
When was CVE-2017-1000423 disclosed?
CVE-2017-1000423 was first published in the National Vulnerability Database on January 2, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-1000423 actively exploited?
CVE-2017-1000423 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 17.2% of all scored CVEs.
What is the CVSS score of CVE-2017-1000423?
CVE-2017-1000423 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2017-1000423?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-1000423, 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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