CVE-2026-58010

HIGHNVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.2 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 75% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
8.2
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.2Exploit: NoneExposed: 0

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

A flaw was found in GLib. An off-by-one error can occur in the gvs_tuple_is_normal function in the glib/gvariant-serialiser.c file when doing an alignment padding check because the bounds check uses > instead of >=, causing an out-of-bounds read of only 1 byte. This issue can cause a minor information disclosure of 1 byte and a denial of service when the out-of-bounds read crosses a page boundary.

CVSS v3
8.2
EG Score
8.2(medium)
EG Risk
42(Track)
EG Risk 42/100SSVC: 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
Severity82% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
24.5%
KEV
Not listed

Published

June 30, 2026

Last Modified

July 2, 2026

Advisory Details (3)

Auto-updated Jun 30, 2026
🔬 Proof of concept available. Patch available. Sources: redhat.
generic🟡 PoC Available

(#YWH-PGM9867-190) Buffer Over-read on GLib through glib/gvariant-serialiser.c:1253 via gvs_tuple_is_normal() (#3915) · Issues · GNOME / GLib · GitLab

https://gitlab.gnome.org/GNOME/glib/-/issues/3915
redhat

2492243 – (CVE-2026-58010) CVE-2026-58010 glib: buffer over-read in glib/gvariant-serialiser.c via gvs_tuple_is_normal()

https://bugzilla.redhat.com/show_bug.cgi?id=2492243
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-58010

Vendor Advisories for CVE-2026-58010(2)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 63× 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.

  1. 2026-07-23 14:18 UTCEPSS rescore
  2. 2026-07-23 14:18 UTCEPSS rescore
  3. 2026-07-23 03:20 UTCEG score recompute▲ 1.70
  4. 2026-07-22 14:08 UTCEPSS rescore
  5. 2026-07-22 14:08 UTCEPSS rescore
  6. 2026-07-21 15:25 UTCEPSS rescore
  7. 2026-07-20 17:08 UTCEPSS rescore
  8. 2026-07-19 14:31 UTCEPSS rescore
  9. 2026-07-19 14:31 UTCEPSS rescore
  10. 2026-07-19 02:29 UTCEPSS rescore
  11. 2026-07-18 10:04 UTCEPSS rescore
  12. 2026-07-17 05:07 UTCVendor advisory
  13. 2026-07-17 05:07 UTCGHSA enrichment
  14. 2026-07-16 17:03 UTCEPSS rescore
  15. 2026-07-16 05:43 UTCVendor advisory
  16. 2026-07-16 05:43 UTCGHSA enrichment
  17. 2026-07-15 16:57 UTCEPSS rescore
  18. 2026-07-15 16:57 UTCEPSS rescore
  19. 2026-07-15 06:18 UTCVendor advisory
  20. 2026-07-15 06:18 UTCGHSA enrichment
  21. 2026-07-15 02:00 UTCEPSS rescore
  22. 2026-07-15 02:00 UTCEPSS rescore
  23. 2026-07-14 06:52 UTCVendor advisory
  24. 2026-07-14 06:52 UTCGHSA enrichment
  25. 2026-07-13 22:31 UTCEPSS rescore
Show 38 more
  1. 2026-07-13 07:26 UTCGHSA enrichment
  2. 2026-07-13 06:13 UTCEPSS rescore
  3. 2026-07-13 06:13 UTCEPSS rescore
  4. 2026-07-12 08:01 UTCVendor advisory
  5. 2026-07-12 08:01 UTCGHSA enrichment
  6. 2026-07-12 05:46 UTCEPSS rescore
  7. 2026-07-11 08:36 UTCVendor advisory
  8. 2026-07-11 08:36 UTCGHSA enrichment
  9. 2026-07-11 08:27 UTCEPSS rescore
  10. 2026-07-11 08:27 UTCEPSS rescore
  11. 2026-07-10 09:11 UTCGHSA enrichment
  12. 2026-07-09 19:10 UTCEPSS rescore
  13. 2026-07-09 19:10 UTCEPSS rescore
  14. 2026-07-09 09:45 UTCGHSA enrichment
  15. 2026-07-08 15:16 UTCEPSS rescore
  16. 2026-07-08 15:16 UTCEPSS rescore
  17. 2026-07-08 10:19 UTCGHSA enrichment
  18. 2026-07-07 13:46 UTCEPSS rescore
  19. 2026-07-07 13:46 UTCEPSS rescore
  20. 2026-07-07 10:54 UTCGHSA enrichment
  21. 2026-07-06 16:27 UTCEPSS rescore
  22. 2026-07-06 16:27 UTCEPSS rescore
  23. 2026-07-06 11:06 UTCGHSA enrichment
  24. 2026-07-06 02:23 UTCEPSS rescore
  25. 2026-07-06 02:23 UTCEPSS rescore
  26. 2026-07-05 11:39 UTCGHSA enrichment
  27. 2026-07-05 02:31 UTCEPSS rescore
  28. 2026-07-05 02:30 UTCEPSS rescore
  29. 2026-07-04 12:14 UTCGHSA enrichment
  30. 2026-07-04 06:31 UTCEPSS rescore
  31. 2026-07-04 06:31 UTCEPSS rescore
  32. 2026-07-03 12:48 UTCGHSA enrichment
  33. 2026-07-02 20:05 UTCNVD updateCVSS v3 → 8.2 · severity → HIGH
  34. 2026-07-02 13:23 UTCGHSA enrichment
  35. 2026-07-01 15:07 UTCEPSS rescore
  36. 2026-07-01 13:58 UTCGHSA enrichment
  37. 2026-06-30 14:34 UTCEG score recompute
  38. 2026-06-30 14:32 UTCNVD updatefirst tracked

Frequently asked(5)

What is CVE-2026-58010?
CVE-2026-58010 is a high vulnerability published on June 30, 2026. A flaw was found in GLib. An off-by-one error can occur in the gvstupleis_normal function in the glib/gvariant-serialiser.c file when doing an alignment padding check because the bounds check uses > instead of >=, causing an out-of-bounds read of only 1 byte. This issue can cause a minor…
When was CVE-2026-58010 disclosed?
CVE-2026-58010 was first published in the National Vulnerability Database on June 30, 2026, with the most recent update on July 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-58010 actively exploited?
CVE-2026-58010 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 24.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-58010?
CVE-2026-58010 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-58010?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-58010, 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

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