CVE-2023-5187

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2023-09-28. 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.

Use after free in Extensions in Google Chrome prior to 117.0.5938.132 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
54%
KEV
Not listed

Published

September 28, 2023

Last Modified

June 17, 2026

Advisory Details (7)

Auto-updated Aug 6, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic

[SECURITY] Fedora 37 Update: chromium-117.0.5938.132-1.fc37 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/[email protected]/message/4MFWDFJSSIFKWKNOCTQCFUNZWAXUCSS4/
generic
https://crbug.com/1475798
generic🔴 Active Exploitation

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2023/09/stable-channel-update-for-desktop_27.html
generic

[SECURITY] [DSA 5508-1] chromium security update

https://www.debian.org/security/2023/dsa-5508
generic

Chromium, Google Chrome, Microsoft Edge: Multiple Vulnerabilities (GLSA 202401-34) — Gentoo security

https://security.gentoo.org/glsa/202401-34
generic

[SECURITY] Fedora 39 Update: chromium-117.0.5938.132-2.fc39 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/[email protected]/message/WTRUIS3564P7ZLM2S2IH4Y4KZ327LI4I/
generic

[SECURITY] Fedora 38 Update: chromium-117.0.5938.132-2.fc38 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/[email protected]/message/CWEJYS5NC7KVFYU3OAMPKQDYN6JQGVK6/

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
chromium100.0.4896.127-1 ... 99.0.4844.84-1~deb11u1 (144 versions)117.0.5938.132-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
chromium113.0.5672.126-1 ... 117.0.5938.92-1 (42 versions)117.0.5938.132-1~deb12u1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
chromium—117.0.5938.132-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
chromium—117.0.5938.132-1—

Weakness Classification(1)

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

All Vendor Advisories

(1)

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 8× in last 7d / 41× 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 121 total refreshes for this CVE.

  1. 2026-08-10 23:58 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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  12. 2026-08-02 01:06 UTCOSV refresh
  13. 2026-08-01 04:14 UTCEPSS rescore
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  21. 2026-07-23 14:16 UTCEPSS rescore
  22. 2026-07-23 02:29 UTCEG score recompute
  23. 2026-07-22 23:15 UTCEG score recompute
  24. 2026-07-22 14:07 UTCEPSS rescore
  25. 2026-07-22 14:07 UTCEPSS rescore
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  1. 2026-07-21 15:23 UTCEPSS rescore
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  9. 2026-07-16 17:01 UTCEPSS rescore
  10. 2026-07-15 16:56 UTCEPSS rescore
  11. 2026-07-15 08:19 UTCOSV refresh
  12. 2026-07-15 01:59 UTCEPSS rescore
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  14. 2026-07-13 22:28 UTCEPSS rescore
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  21. 2026-07-08 15:13 UTCEPSS rescore
  22. 2026-07-07 13:45 UTCEPSS rescore
  23. 2026-07-07 13:44 UTCEPSS rescore
  24. 2026-07-06 16:26 UTCEPSS rescore
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  26. 2026-07-06 02:22 UTCEPSS rescore
  27. 2026-07-06 02:22 UTCEPSS rescore
  28. 2026-07-05 02:29 UTCEPSS rescore
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  30. 2026-07-01 15:05 UTCEPSS rescore
  31. 2026-06-30 23:21 UTCEPSS rescore
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  36. 2026-06-28 04:55 UTCEPSS rescore
  37. 2026-06-27 09:04 UTCOSV refresh
  38. 2026-06-27 03:07 UTCEPSS rescore
  39. 2026-06-25 13:48 UTCEPSS rescore
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  41. 2026-06-24 14:04 UTCEPSS rescore
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  43. 2026-06-23 21:31 UTCEPSS rescore
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  45. 2026-06-22 14:24 UTCEPSS rescore
  46. 2026-06-22 14:24 UTCEPSS rescore
  47. 2026-06-21 14:55 UTCEPSS rescore
  48. 2026-06-21 14:55 UTCEPSS rescore
  49. 2026-06-21 01:58 UTCEPSS rescore
  50. 2026-06-21 01:58 UTCEPSS rescore
  51. 2026-06-19 19:24 UTCEPSS rescore
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  53. 2026-06-18 17:51 UTCEPSS rescore
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  55. 2026-06-16 17:51 UTCEPSS rescore
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  58. 2026-06-14 23:16 UTCEPSS rescore
  59. 2026-06-13 22:59 UTCEPSS rescore
  60. 2026-06-13 22:59 UTCEPSS rescore
  61. 2026-06-12 23:11 UTCEPSS rescore
  62. 2026-06-11 13:59 UTCEPSS rescore
  63. 2026-06-10 22:17 UTCEPSS rescore
  64. 2026-06-10 13:21 UTCEPSS rescore
  65. 2026-06-09 19:47 UTCOSV refresh
  66. 2026-06-08 14:16 UTCEPSS rescore
  67. 2026-06-08 14:16 UTCEPSS rescore
  68. 2026-06-07 15:24 UTCEPSS rescore
  69. 2026-06-07 15:24 UTCEPSS rescore
  70. 2026-06-06 13:46 UTCEPSS rescore
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  72. 2026-06-05 22:46 UTCEPSS rescore
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  74. 2026-06-05 06:09 UTCEPSS rescore
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Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2023-5187?
CVE-2023-5187 is a high vulnerability published on September 28, 2023. Use after free in Extensions in Google Chrome prior to 117.0.5938.132 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
When was CVE-2023-5187 disclosed?
CVE-2023-5187 was first published in the National Vulnerability Database on September 28, 2023, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-5187 actively exploited?
CVE-2023-5187 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 45.8% of all scored CVEs.
What is the CVSS score of CVE-2023-5187?
CVE-2023-5187 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2023-5187?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-5187, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-5187

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