CVE-2026-2443

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-02-13. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

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

A flaw was identified in libsoup, a widely used HTTP library in GNOME-based systems. When processing specially crafted HTTP Range headers, the library may improperly validate requested byte ranges. In certain build configurations, this could allow a remote attacker to access portions of server memory beyond the intended response. Exploitation requires a vulnerable configuration and access to a server using the embedded SoupServer component.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity53% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
38%
KEV
Not listed

Published

February 13, 2026

Last Modified

June 17, 2026

Advisory Details (3)

Auto-updated Aug 9, 2026
Patch available. Sources: redhat.
generic

(CVE-2026-2443) libsoup: unsafe usage of `g_bytes_new_from_bytes()` in `handle_partial_get()` allows leaking sensitive data from heap (#487) · Issues · GNOME / libsoup · GitLab

https://gitlab.gnome.org/GNOME/libsoup/-/issues/487
redhat

2439671 – (CVE-2026-2443) CVE-2026-2443 libsoup: Out-of-Bounds Read in libsoup handle_partial_get() Leading to Heap Information Disclosure

https://bugzilla.redhat.com/show_bug.cgi?id=2439671
redhat Patch Available

CVE-2026-2443 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-2443

Affected Packages

(6 across 4 ecosystems)
Debian:12(2)
PackageVulnerable rangeFixed inDependents
libsoup2.42.74.3-1 ... 2.74.3-9 (16 versions)——
libsoup33.2.2-2 ... 3.6.6-1 (35 versions)——
Debian:13(2)
PackageVulnerable rangeFixed inDependents
libsoup2.42.74.3-10.1, 2.74.3-11——
libsoup33.6.5-3 ... 3.6.6-1 (8 versions)——
Debian:11(1)
PackageVulnerable rangeFixed inDependents
libsoup2.42.72.0-2 ... 2.74.3-9 (28 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libsoup33.6.5-3 ... 3.6.5-9 (7 versions)3.6.6-1—

Weakness Classification(1)

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 7× in last 7d / 27× 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 175 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-2443?
CVE-2026-2443 is a medium vulnerability published on February 13, 2026. A flaw was identified in libsoup, a widely used HTTP library in GNOME-based systems. When processing specially crafted HTTP Range headers, the library may improperly validate requested byte ranges. In certain build configurations, this could allow a remote attacker to access portions of server…
When was CVE-2026-2443 disclosed?
CVE-2026-2443 was first published in the National Vulnerability Database on February 13, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-2443 actively exploited?
CVE-2026-2443 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 61.8% of all scored CVEs.
What is the CVSS score of CVE-2026-2443?
CVE-2026-2443 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-2443?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-2443, 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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