CVE-2026-8358

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.4 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 93% 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: cna:document fdn., epss
Trending — 4 sources updated this week
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.4Exploit: None knownExposed: 0

A fix is available — apply it.

LibreOffice Calc can import tracked changes from a spreadsheet document. A heap buffer overflow existed when a document reused the same change identifier for two different kinds of change. The importer then treated one change object as a different, larger type and wrote past the end of its allocation. In fixed versions records with a duplicate identifier are rejected.

CVSS v3
5.4
EG Score
5.4(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity54% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
7%
KEV
Not listed

Published

June 15, 2026

Last Modified

June 16, 2026

Advisory Details (1)

Auto-updated Jun 15, 2026
No patch confirmed yet.
generic

Security advisories — LibreOffice

https://www.libreoffice.org/about-us/security/advisories/cve-2026-8358

Vendor Advisories for CVE-2026-8358(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuure-java (1:7.3.7-0ubuntu0.22.04.12) @ jammy2026-08-24ubuntu

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
libreoffice1:7.0.4-4 ... 4:7.6.4~rc1-1~bpo12+1 (402 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libreoffice4:7.4.5-3 ... 4:7.4.7-1~bpo11+1 (17 versions)4:7.4.7-1+deb12u13—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libreoffice4:25.2.3-2 ... 4:25.2.3-2+deb13u5~bpo12+1 (8 versions)4:25.2.3-2+deb13u5—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libreoffice4:25.2.3-2 ... 4:26.2.4.2-1~bpo13+1 (54 versions)4:26.2.4.2-1—

Weakness Classification(2)

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 18× in last 7d / 98× 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 181 total refreshes for this CVE.

  1. 2026-08-26 14:47 UTCEPSS rescore
  2. 2026-08-25 13:49 UTCEPSS rescore
  3. 2026-08-24 23:34 UTCEG score recompute
  4. 2026-08-24 23:34 UTCVendor advisory
  5. 2026-08-24 23:34 UTCGHSA enrichment
  6. 2026-08-24 14:18 UTCEPSS rescore
  7. 2026-08-23 09:48 UTCEG score recompute
  8. 2026-08-23 09:48 UTCVendor advisory
  9. 2026-08-23 09:48 UTCGHSA enrichment
  10. 2026-08-23 00:19 UTCEPSS rescore
  11. 2026-08-21 23:49 UTCEPSS rescore
  12. 2026-08-21 18:58 UTCEG score recompute
  13. 2026-08-21 18:58 UTCVendor advisory
  14. 2026-08-21 18:57 UTCGHSA enrichment
  15. 2026-08-20 22:56 UTCEPSS rescore
  16. 2026-08-20 16:22 UTCEG score recompute
  17. 2026-08-20 16:22 UTCVendor advisory
  18. 2026-08-20 16:22 UTCGHSA enrichment
  19. 2026-08-19 17:04 UTCEPSS rescore
  20. 2026-08-19 13:15 UTCEG score recompute
  21. 2026-08-19 13:15 UTCVendor advisory
  22. 2026-08-19 13:15 UTCGHSA enrichment
  23. 2026-08-18 13:49 UTCEPSS rescore
  24. 2026-08-18 13:49 UTCEPSS rescore
  25. 2026-08-17 13:47 UTCEPSS rescore
Show 75 more
  1. 2026-08-17 05:04 UTCEG score recompute
  2. 2026-08-17 05:04 UTCVendor advisory
  3. 2026-08-17 05:04 UTCGHSA enrichment
  4. 2026-08-16 14:56 UTCEPSS rescore
  5. 2026-08-16 14:56 UTCEPSS rescore
  6. 2026-08-16 02:44 UTCEG score recompute
  7. 2026-08-16 02:44 UTCVendor advisory
  8. 2026-08-16 02:44 UTCGHSA enrichment
  9. 2026-08-16 02:15 UTCEPSS rescore
  10. 2026-08-15 01:31 UTCEPSS rescore
  11. 2026-08-15 00:24 UTCVendor advisory
  12. 2026-08-15 00:24 UTCGHSA enrichment
  13. 2026-08-13 22:04 UTCEG score recompute
  14. 2026-08-13 22:04 UTCVendor advisory
  15. 2026-08-13 22:04 UTCGHSA enrichment
  16. 2026-08-13 22:00 UTCEPSS rescore
  17. 2026-08-12 15:12 UTCEG score recompute
  18. 2026-08-12 15:12 UTCVendor advisory
  19. 2026-08-12 15:12 UTCGHSA enrichment
  20. 2026-08-12 13:51 UTCEPSS rescore
  21. 2026-08-11 13:43 UTCEPSS rescore
  22. 2026-08-11 12:50 UTCEG score recompute
  23. 2026-08-11 12:50 UTCVendor advisory
  24. 2026-08-11 12:50 UTCGHSA enrichment
  25. 2026-08-11 00:00 UTCEPSS rescore
  26. 2026-08-10 10:31 UTCEG score recompute
  27. 2026-08-10 10:31 UTCVendor advisory
  28. 2026-08-10 10:31 UTCGHSA enrichment
  29. 2026-08-09 13:47 UTCEPSS rescore
  30. 2026-08-09 08:11 UTCEG score recompute
  31. 2026-08-09 08:11 UTCVendor advisory
  32. 2026-08-09 08:11 UTCGHSA enrichment
  33. 2026-08-08 16:37 UTCEPSS rescore
  34. 2026-08-08 05:52 UTCEG score recompute
  35. 2026-08-08 05:52 UTCVendor advisory
  36. 2026-08-08 05:52 UTCGHSA enrichment
  37. 2026-08-07 03:32 UTCEG score recompute
  38. 2026-08-07 03:32 UTCVendor advisory
  39. 2026-08-07 03:32 UTCGHSA enrichment
  40. 2026-08-06 13:47 UTCEPSS rescore
  41. 2026-08-06 01:01 UTCEG score recompute
  42. 2026-08-06 01:01 UTCVendor advisory
  43. 2026-08-06 01:01 UTCGHSA enrichment
  44. 2026-08-05 19:17 UTCEPSS rescore
  45. 2026-08-05 19:17 UTCEPSS rescore
  46. 2026-08-04 22:42 UTCEG score recompute
  47. 2026-08-04 22:42 UTCVendor advisory
  48. 2026-08-04 22:41 UTCGHSA enrichment
  49. 2026-08-04 15:10 UTCEPSS rescore
  50. 2026-08-04 10:39 UTCEPSS rescore
  51. 2026-08-03 20:22 UTCEG score recompute
  52. 2026-08-03 20:22 UTCVendor advisory
  53. 2026-08-03 20:22 UTCGHSA enrichment
  54. 2026-08-03 10:36 UTCEPSS rescore
  55. 2026-08-02 18:00 UTCEG score recompute
  56. 2026-08-02 18:00 UTCVendor advisory
  57. 2026-08-02 18:00 UTCGHSA enrichment
  58. 2026-08-02 02:27 UTCEPSS rescore
  59. 2026-08-01 15:40 UTCEG score recompute
  60. 2026-08-01 15:40 UTCVendor advisory
  61. 2026-08-01 15:40 UTCGHSA enrichment
  62. 2026-08-01 04:16 UTCEPSS rescore
  63. 2026-07-31 13:20 UTCEG score recompute
  64. 2026-07-31 13:20 UTCGHSA enrichment
  65. 2026-07-30 16:28 UTCEPSS rescore
  66. 2026-07-30 09:23 UTCEG score recompute
  67. 2026-07-30 09:23 UTCGHSA enrichment
  68. 2026-07-30 01:30 UTCEPSS rescore
  69. 2026-07-29 04:16 UTCEG score recompute
  70. 2026-07-29 04:16 UTCGHSA enrichment
  71. 2026-07-28 15:37 UTCEPSS rescore
  72. 2026-07-28 01:54 UTCEG score recompute
  73. 2026-07-28 01:54 UTCGHSA enrichment
  74. 2026-07-27 14:14 UTCEPSS rescore
  75. 2026-07-26 20:13 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-8358?
CVE-2026-8358 is a medium vulnerability published on June 15, 2026. LibreOffice Calc can import tracked changes from a spreadsheet document. A heap buffer overflow existed when a document reused the same change identifier for two different kinds of change. The importer then treated one change object as a different, larger type and wrote past the end of its…
When was CVE-2026-8358 disclosed?
CVE-2026-8358 was first published in the National Vulnerability Database on June 15, 2026, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8358 actively exploited?
CVE-2026-8358 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 93.4% of all scored CVEs.
What is the CVSS score of CVE-2026-8358?
CVE-2026-8358 has a CVSS v4.0 base score of 5.4 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-8358?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8358, 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-2026-8358

Explore →

Is Your Infrastructure Affected by CVE-2026-8358?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs