CVE-2026-58013

HIGHNVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.2 under NVD CVSS v3. EPSS exploit probability: 0.9% (56th percentile of EPSS-scored CVEs). GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — Patch released this week
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.9%CVSS: 8.2Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in GLib. A buffer over-read can occur in g_io_channel_read_line_backend() in the giochannel.c file when a custom line terminator with a length greater than one is set, causing memcmp to read past the GString buffer. This vulnerability can cause a minor information disclosure of 7 bytes or a denial of service when the buffer over-read crosses a page boundary.

CVSS v3
8.2
EG Score
8.2HIGHmedium confidence
EG Risk
37
EG Risk 37/100CISA 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
Severity82% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.9%
EPSS %ILE
56th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (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 (3)

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

(#YWH-PGM9867-199) Buffer Over-read on GLib through glib/giochannel.c via "g_io_channel_read_line_backend" (#3925) · Issues · GNOME / GLib · GitLab

https://gitlab.gnome.org/GNOME/glib/-/issues/3925
redhat

2492248 – (CVE-2026-58013) CVE-2026-58013 glib: buffer over-read in glib/giochannel.c via "g_io_channel_read_line_backend"

https://bugzilla.redhat.com/show_bug.cgi?id=2492248
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-58013

Vendor Advisories for CVE-2026-58013(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-rocm-rhel9:17907035062026-10-01redhat
redhatrhai/base-image-spyre-rhel9:17907035682026-10-01redhat
redhatrhai/base-image-tpu-rhel9:17907034972026-10-01redhat
redhatrhai/base-image-rocm-rhel9:17907034942026-10-01redhat
redhatrhai/base-image-cuda-rhel9:17907035862026-10-01redhat
redhatrhai/base-image-rocm-rhel9:17902768862026-09-30redhat
redhatrhaiis/vllm-cuda-rhel9:17906217182026-09-30redhat
redhatrhai/base-image-cuda-rhel9:17902769742026-09-30redhat
redhatrhaiis/model-opt-cuda-rhel9:17906217142026-09-30redhat
redhatrhai/base-image-cpu-rhel9:17902770452026-09-30redhat
redhatrhai/base-image-spyre-rhel9:17902768892026-09-30redhat
redhatrhaiis/vllm-rocm-rhel9:17906217132026-09-30redhat
redhatrhai/base-image-tpu-rhel9:17902768842026-09-30redhat
redhatcert-manager/cert-manager-operator-rhel9:17902724262026-09-28redhat
redhatcert-manager/cert-manager-operator-rhel9:17905898552026-09-28redhat
redhatcert-manager/cert-manager-istio-csr-rhel9:17905899142026-09-28redhat
redhatcert-manager/cert-manager-trust-manager-rhel9:17905985932026-09-28redhat
redhatcert-manager/jetstack-cert-manager-rhel9:17905899122026-09-28redhat
redhatcert-manager/cert-manager-istio-csr-rhel9:17902237192026-09-28redhat
redhatcert-manager/jetstack-cert-manager-rhel9:17902232792026-09-28redhat
redhatglib2-0:2.68.4-14.el9_4.82026-09-09redhat
redhatglib2-0:2.68.4-16.el9_6.72026-09-09redhat
redhatglib2-0:2.56.4-165.el8_8.22026-09-09redhat
redhatrhui5/rhua-rhel9:17888805812026-09-09redhat
redhatglib2-0:2.56.4-10.el8_4.72026-09-09redhat
redhatglib2-0:2.56.1-13.el7_9.12026-09-09redhat
redhatglib2-0:2.68.4-7.el9_2.72026-09-09redhat
redhatglib2-0:2.56.4-158.el8_6.72026-09-09redhat
redhatglib2-0:2.80.4-4.el10_0.172026-09-09redhat

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 ... 2.89.3-2 (186 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 ... 2.88.0-1 (37 versions)
  • every version up to 2.88.1-2: fixed in 2.88.1-2
—

Weakness Classification(1)

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

Additional Vendor Advisories

(21)

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 40× in last 7d / 100× 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 380 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-58013?
CVE-2026-58013 is a high vulnerability published on June 30, 2026. A flaw was found in GLib. A buffer over-read can occur in giochannelreadline_backend() in the giochannel.c file when a custom line terminator with a length greater than one is set, causing memcmp to read past the GString buffer. This vulnerability can cause a minor information disclosure of 7 bytes…
When was CVE-2026-58013 disclosed?
CVE-2026-58013 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-2026-58013 actively exploited?
CVE-2026-58013 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.9% probability of exploitation in the next 30 days (56th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-58013?
CVE-2026-58013 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-58013?
A fix for CVE-2026-58013 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-58013 are linked in the Vendor Advisories panel on this page.

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