CVE-2026-58016

CRITICALNVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.1 under NVD CVSS v3. EPSS exploit probability: 1.0% (61st percentile of EPSS-scored CVEs). GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 9.1Exploit: None knownExposed services: Not assessed

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
9.1CRITICALmedium confidence
EG Risk
56
EG Risk 56/100CISA SSVC

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%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
44th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

June 30, 2026

Last Modified

October 2, 2026

Advisory Details (13)

Auto-updated Sep 15, 2026
Patch available. Sources: redhat.
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 Extended Update Support

https://access.redhat.com/errata/RHSA-2026:51181
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions.

https://access.redhat.com/errata/RHSA-2026:51177
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions.

https://access.redhat.com/errata/RHSA-2026:51176
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 9.6 Extended Update Support.

https://access.redhat.com/errata/RHSA-2026:51175
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2026:49512
redhatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2026:46836
redhatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2026:44481
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2026:42090
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2026:42089
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 10.

https://access.redhat.com/errata/RHSA-2026:42063
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
redhatMentions a patch (unverified)

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
redhatMentions a patch (unverified)

cve-details

https://access.redhat.com/security/cve/CVE-2026-58016

Vendor Advisories for CVE-2026-58016(20)

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

Patch Availability(30)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatrhai/base-image-cpu-rhel9:17907035902026-10-01redhat
redhatrhai/base-image-spyre-rhel9:17907035682026-10-01redhat
redhatrhai/base-image-rocm-rhel9:17907034942026-10-01redhat
redhatrhai/base-image-rocm-rhel9:17907035062026-10-01redhat
redhatrhai/base-image-tpu-rhel9:17907034972026-10-01redhat
redhatrhai/base-image-cuda-rhel9:17907035862026-10-01redhat
redhatrhai/base-image-cpu-rhel9:17902770452026-09-30redhat
redhatrhai/base-image-cuda-rhel9:17902769742026-09-30redhat
redhatrhai/base-image-spyre-rhel9:17902768892026-09-30redhat
redhatrhai/base-image-rocm-rhel9:17902768862026-09-30redhat
redhatrhai/base-image-tpu-rhel9:17902768842026-09-30redhat
redhatcert-manager/jetstack-cert-manager-rhel9:17902232792026-09-28redhat
redhatcert-manager/jetstack-cert-manager-rhel9:17905899122026-09-28redhat
redhatcert-manager/cert-manager-istio-csr-rhel9:17905899142026-09-28redhat
redhatcert-manager/cert-manager-istio-csr-rhel9:17902237192026-09-28redhat
redhatcert-manager/cert-manager-operator-rhel9:17905898552026-09-28redhat
redhatcert-manager/cert-manager-trust-manager-rhel9:17905985932026-09-28redhat
redhatcert-manager/cert-manager-operator-rhel9:17902724262026-09-28redhat
redhatrhui5/rhua-tp-rhel9:17872412602026-08-24redhat
redhatinsights-proxy/insights-proxy-container-rhel9:17864336562026-08-11redhat
redhatglib2-0:2.68.4-14.el9_4.72026-08-06redhat
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
redhatglib2-0:2.56.4-10.el8_4.62026-08-06redhat
redhatmingw-glib2-0:2.70.1-9.el8_102026-08-03redhat
redhatdiscovery/discovery-ui-rhel9:17848217502026-07-27redhat

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 rangeFix by version rangeDependents
glib2.02.66.8-1 ... 2.89.3-3 (187 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
glib2.02.74.6-2 ... 2.90.0-1 (147 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
glib2.02.84.3-1 ... 2.84.4-3~deb13u3 (6 versions)
  • every version up to 2.84.4-3~deb13u4: fixed in 2.84.4-3~deb13u4
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
glib2.02.84.3-1 ... 2.88.3-1 (40 versions)
  • every version up to 2.88.3-2: fixed in 2.88.3-2
—

Weakness Classification(1)

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

Additional Vendor Advisories

(16)

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 7× in last 7d / 82× 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 616 total refreshes for this CVE.

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

Related CVEs(same product + 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 on June 30, 2026, with the most recent update on October 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-58016 actively exploited?
CVE-2026-58016 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (44th percentile of EPSS-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?
A fix for CVE-2026-58016 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-58016 are linked in the Vendor Advisories panel on this page.

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