CVE-2023-2258

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2023-04-24. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: None knownExposed: 0

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

Improper Neutralization of Formula Elements in a CSV File in GitHub repository alfio-event/alf.io prior to 2.0-M4-2304.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
58%
KEV
Not listed

Published

April 24, 2023

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated Aug 28, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

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github_commit

commit 94e2923a3174 (alfio-event/alf.io)

Fix landed in alfio-event/alf.io commit 94e2923a3174 — awaiting tagged release

https://github.com/alfio-event/alf.io/commit/94e2923a317452e337393789c9f3192dfc1ddac2

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 27× 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 161 total refreshes for this CVE.

  1. 2026-09-07 15:59 UTCEPSS rescore
  2. 2026-09-06 13:45 UTCEPSS rescore
  3. 2026-09-05 15:25 UTCEPSS rescore
  4. 2026-09-04 13:58 UTCEPSS rescore
  5. 2026-09-04 08:46 UTCOSV refresh
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  21. 2026-08-17 19:29 UTCOSV refresh
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  1. 2026-08-12 13:48 UTCEPSS rescore
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  23. 2026-07-27 14:10 UTCEPSS rescore
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  27. 2026-07-24 14:15 UTCEPSS rescore
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  30. 2026-07-23 02:18 UTCEG score recompute
  31. 2026-07-22 23:06 UTCEG score recompute
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  44. 2026-07-15 22:23 UTCOSV refresh
  45. 2026-07-15 16:56 UTCEPSS rescore
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  47. 2026-07-15 01:58 UTCEPSS rescore
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  49. 2026-07-13 22:28 UTCEPSS rescore
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  56. 2026-07-09 19:08 UTCEPSS rescore
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  69. 2026-06-28 14:06 UTCEPSS rescore
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  71. 2026-06-28 04:54 UTCEPSS rescore
  72. 2026-06-27 23:04 UTCOSV refresh
  73. 2026-06-27 03:07 UTCEPSS rescore
  74. 2026-06-25 13:48 UTCEPSS rescore
  75. 2026-06-25 13:48 UTCEPSS rescore

Frequently asked(5)

What is CVE-2023-2258?
CVE-2023-2258 is a high vulnerability published on April 24, 2023. Improper Neutralization of Formula Elements in a CSV File in GitHub repository alfio-event/alf.io prior to 2.0-M4-2304.
When was CVE-2023-2258 disclosed?
CVE-2023-2258 was first published in the National Vulnerability Database on April 24, 2023, 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-2023-2258 actively exploited?
CVE-2023-2258 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 42.2% of all scored CVEs.
What is the CVSS score of CVE-2023-2258?
CVE-2023-2258 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2023-2258?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-2258, 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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