CVE-2026-58016

CRITICALNVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.1 under NVD CVSS v3. EPSS exploit probability: 0.5%, top 57% 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
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.1Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in GLib. A state confusion issue exists in g_dbus_node_info_new_for_xml() in the gio/gdbusintrospection.c file when processing malformed D-Bus introspection XML, specifically with a node element nested within other elements like method, signal, property or arg. This issue can cause an unsigned integer overflow and lead to an out-of-bounds read, resulting in a denial of service.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
56(Track)
EG Risk 56/100SSVC: 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
Severity91% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
43%
KEV
Not listed

Published

June 30, 2026

Last Modified

August 25, 2026

Advisory Details (8)

Auto-updated Aug 1, 2026
🔬 Proof of concept available. Patch available. Sources: redhat.
generic🟡 PoC Available

(CVE-2026-58016) (#YWH-PGM9867-204) Integer Underflow (CWE-191) on GLib through gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml" (#3932) · Issues · GNOME / GLib · GitLab

https://gitlab.gnome.org/GNOME/glib/-/issues/3932
redhat Patch Available

2492257 – (CVE-2026-58016) CVE-2026-58016 glib: integer underflow in gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml"

Affected: Red Hat Enterprise Linux 10

https://bugzilla.redhat.com/show_bug.cgi?id=2492257
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-58016
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:46836
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:44481
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2026:42090
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2026:42089
redhat Patch Available

Affected: Red Hat Enterprise Linux 10.

https://access.redhat.com/errata/RHSA-2026:42063

Vendor Advisories for CVE-2026-58016(11)

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

Patch Availability(15)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatinsights-proxy/insights-proxy-container-rhel9:17864336562026-08-11redhat
redhatglib2-0:2.56.4-10.el8_4.62026-08-06redhat
redhatglib2-0:2.56.4-158.el8_6.62026-08-06redhat
redhatglib2-0:2.56.4-165.el8_8.12026-08-06redhat
redhatglib2-0:2.56.1-13.el7_92026-08-06redhat
redhatglib2-0:2.68.4-16.el9_6.62026-08-06redhat
redhatglib2-0:2.80.4-4.el10_0.102026-08-06redhat
redhatglib2-0:2.68.4-7.el9_2.62026-08-06redhat
redhatglib2-0:2.68.4-14.el9_4.72026-08-06redhat
redhatmingw-glib2-0:2.70.1-9.el8_102026-08-03redhat
redhatdiscovery/discovery-ui-rhel9:17848217502026-07-27redhat
redhatrhui5/rhua-rhel9:17847950762026-07-23redhat
redhatglib2-0:2.80.4-12.el10_2.142026-07-20redhat
redhatglib2-0:2.56.4-170.el8_102026-07-20redhat
redhatglib2-0:2.68.4-19.el9_8.22026-07-20redhat

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
glib2.02.66.8-1 ... 2.89.3-3 (187 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
glib2.02.74.6-2 ... 2.89.3-3 (140 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
glib2.02.84.3-1 ... 2.89.3-3 (43 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
glib2.02.84.3-1 ... 2.89.3-3 (43 versions)——

Weakness Classification(1)

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

Additional Vendor Advisories

(7)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 75× in last 7d / 401× 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 506 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-58016?
CVE-2026-58016 is a critical vulnerability published on June 30, 2026. A flaw was found in GLib. A state confusion issue exists in gdbusnodeinfonewforxml() in the gio/gdbusintrospection.c file when processing malformed D-Bus introspection XML, specifically with a node element nested within other elements like method, signal, property or arg. This issue can cause an…
When was CVE-2026-58016 disclosed?
CVE-2026-58016 was first published in the National Vulnerability Database on June 30, 2026, with the most recent update on August 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-58016 actively exploited?
CVE-2026-58016 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 56.7% of all scored CVEs.
What is the CVSS score of CVE-2026-58016?
CVE-2026-58016 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-58016?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-58016, 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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