CVE-2023-40305

HIGHNVD 5.57.8▲
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory published 2023-08-14. NVD baseline CVSS 5.5; sources differ by 2.3.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
7.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: Elevated riskExposed: 0

A fix is available — apply it.

GNU indent 2.2.13 has a heap-based buffer overflow in search_brace in indent.c via a crafted file.

CVSS v3
5.5
EG Score
7.8(medium)
EG Risk
51(Track)
EG Risk 51/100SSVC: 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
Severity78% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

Published

August 14, 2023

Last Modified

November 21, 2024

References (10)

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuindent-doc (2.2.12-4ubuntu0.1) @ lunar2026-05-24ubuntu

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
indent2.2.12-12.2.12-1+deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
indent2.2.12-4, 2.2.12-4+deb12u12.2.12-4+deb12u2—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
indent—2.2.13-3—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
indent—2.2.13-3—

Weakness Classification(1)

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

All Vendor Advisories

(2)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 7× in last 7d / 46× 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 136 total refreshes for this CVE.

  1. 2026-08-09 13:44 UTCEPSS rescore
  2. 2026-08-09 13:44 UTCEPSS rescore
  3. 2026-08-08 16:35 UTCEPSS rescore
  4. 2026-08-07 16:25 UTCEPSS rescore
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  8. 2026-08-03 10:34 UTCEPSS rescore
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  10. 2026-08-02 04:23 UTCOSV refresh
  11. 2026-08-02 02:25 UTCEPSS rescore
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  1. 2026-07-23 14:16 UTCEPSS rescore
  2. 2026-07-23 02:25 UTCEG score recompute
  3. 2026-07-22 23:12 UTCEG score recompute
  4. 2026-07-22 14:06 UTCEPSS rescore
  5. 2026-07-21 15:23 UTCEPSS rescore
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  7. 2026-07-20 17:06 UTCEPSS rescore
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  14. 2026-07-15 16:56 UTCEPSS rescore
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  16. 2026-07-15 12:19 UTCOSV refresh
  17. 2026-07-15 01:58 UTCEPSS rescore
  18. 2026-07-13 22:28 UTCEPSS rescore
  19. 2026-07-13 22:28 UTCEPSS rescore
  20. 2026-07-13 06:11 UTCEPSS rescore
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  22. 2026-07-12 05:45 UTCEPSS rescore
  23. 2026-07-12 05:45 UTCEPSS rescore
  24. 2026-07-11 08:26 UTCEPSS rescore
  25. 2026-07-11 08:26 UTCEPSS rescore
  26. 2026-07-09 19:08 UTCEPSS rescore
  27. 2026-07-08 15:13 UTCEPSS rescore
  28. 2026-07-07 13:44 UTCEPSS rescore
  29. 2026-07-06 16:26 UTCEPSS rescore
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  31. 2026-07-06 02:22 UTCEPSS rescore
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  34. 2026-07-01 15:05 UTCEPSS rescore
  35. 2026-06-30 23:21 UTCEPSS rescore
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  37. 2026-06-29 14:05 UTCEPSS rescore
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  40. 2026-06-28 04:55 UTCEPSS rescore
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  42. 2026-06-27 12:34 UTCOSV refresh
  43. 2026-06-27 03:07 UTCEPSS rescore
  44. 2026-06-27 03:07 UTCEPSS rescore
  45. 2026-06-25 13:48 UTCEPSS rescore
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  47. 2026-06-24 14:04 UTCEPSS rescore
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  49. 2026-06-23 21:31 UTCEPSS rescore
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  51. 2026-06-22 14:24 UTCEPSS rescore
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  53. 2026-06-21 14:55 UTCEPSS rescore
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  55. 2026-06-21 01:58 UTCEPSS rescore
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  57. 2026-06-19 19:24 UTCEPSS rescore
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  59. 2026-06-18 17:51 UTCEPSS rescore
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  71. 2026-06-11 13:59 UTCEPSS rescore
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  73. 2026-06-10 22:17 UTCEPSS rescore
  74. 2026-06-10 13:21 UTCEPSS rescore
  75. 2026-06-10 13:21 UTCEPSS rescore

Frequently asked(5)

What is CVE-2023-40305?
CVE-2023-40305 is a high vulnerability published on August 14, 2023. GNU indent 2.2.13 has a heap-based buffer overflow in search_brace in indent.c via a crafted file.
When was CVE-2023-40305 disclosed?
CVE-2023-40305 was first published in the National Vulnerability Database on August 14, 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-2023-40305 actively exploited?
CVE-2023-40305 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 65.0% of all scored CVEs.
What is the CVSS score of CVE-2023-40305?
CVE-2023-40305 has a CVSS v3 base score of 5.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.8.
How do I remediate CVE-2023-40305?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-40305, 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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