CVE-2026-77014

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory published 2026-08-20. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
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 found in libsoup's SoupServer HTTP Range header processing. The sort_ranges() comparator in soup-message-headers.c truncates a 64-bit subtraction result to 32-bit int, flipping the sign for range offsets differing by more than INT_MAX. This causes silent omission of requested byte ranges from HTTP 206 Partial Content responses on resources larger than approximately 2 GB.

CVSS v3
5.3
EG Score
5.3(high)
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
14%
KEV
Not listed

Published

August 20, 2026

Last Modified

August 25, 2026

Advisory Details (3)

Auto-updated Aug 20, 2026
Patch available. Sources: redhat.
generic

message-headers: Fix Range and Content-Range parsing (!550) · Merge requests · GNOME / libsoup · GitLab

https://gitlab.gnome.org/GNOME/libsoup/-/merge_requests/550
redhat

2520143 – (CVE-2026-77014) CVE-2026-77014 libsoup: libsoup: Integer truncation in sort_ranges() comparator causes silent omission of HTTP Range responses

https://bugzilla.redhat.com/show_bug.cgi?id=2520143
redhat Patch Available

CVE-2026-77014 - 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-2026-77014

Vendor Advisories for CVE-2026-77014(1)

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

Affected Packages

(5 across 3 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:14(1)
PackageVulnerable rangeFixed inDependents
libsoup33.6.5-3 ... 3.6.6-1 (8 versions)——

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 25× in last 7d / 93× 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. 2026-09-19 04:45 UTCEG score recompute
  2. 2026-09-19 04:45 UTCVendor advisory
  3. 2026-09-19 04:44 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 04:30 UTCEG score recompute
  6. 2026-09-18 04:30 UTCVendor advisory
  7. 2026-09-18 04:30 UTCGHSA enrichment
  8. 2026-09-17 04:15 UTCEG score recompute
  9. 2026-09-17 04:15 UTCVendor advisory
  10. 2026-09-17 04:15 UTCGHSA enrichment
  11. 2026-09-16 14:08 UTCEPSS rescore
  12. 2026-09-16 05:15 UTCEPSS rescore
  13. 2026-09-16 03:59 UTCVendor advisory
  14. 2026-09-16 03:59 UTCGHSA enrichment
  15. 2026-09-15 03:37 UTCEG score recompute
  16. 2026-09-15 03:37 UTCVendor advisory
  17. 2026-09-15 03:37 UTCGHSA enrichment
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-14 03:22 UTCEG score recompute
  20. 2026-09-14 03:22 UTCVendor advisory
  21. 2026-09-14 03:22 UTCGHSA enrichment
  22. 2026-09-13 03:07 UTCEG score recompute
  23. 2026-09-13 03:07 UTCVendor advisory
  24. 2026-09-13 03:07 UTCGHSA enrichment
  25. 2026-09-12 15:02 UTCEPSS rescore
Show 71 more
  1. 2026-09-12 02:51 UTCEG score recompute
  2. 2026-09-12 02:51 UTCVendor advisory
  3. 2026-09-12 02:51 UTCGHSA enrichment
  4. 2026-09-11 14:53 UTCEPSS rescore
  5. 2026-09-11 02:36 UTCEG score recompute
  6. 2026-09-11 02:36 UTCGHSA enrichment
  7. 2026-09-10 09:35 UTCEPSS rescore
  8. 2026-09-10 02:21 UTCGHSA enrichment
  9. 2026-09-09 02:06 UTCEG score recompute
  10. 2026-09-09 02:06 UTCVendor advisory
  11. 2026-09-09 02:06 UTCGHSA enrichment
  12. 2026-09-08 22:01 UTCEPSS rescore
  13. 2026-09-08 00:46 UTCEG score recompute
  14. 2026-09-08 00:46 UTCVendor advisory
  15. 2026-09-08 00:46 UTCGHSA enrichment
  16. 2026-09-07 00:30 UTCEG score recompute
  17. 2026-09-07 00:30 UTCGHSA enrichment
  18. 2026-09-06 13:48 UTCEPSS rescore
  19. 2026-09-06 00:08 UTCEG score recompute
  20. 2026-09-06 00:08 UTCGHSA enrichment
  21. 2026-09-04 23:52 UTCEG score recompute
  22. 2026-09-04 23:52 UTCGHSA enrichment
  23. 2026-09-04 05:07 UTCEPSS rescore
  24. 2026-09-03 22:18 UTCGHSA enrichment
  25. 2026-09-02 21:12 UTCEG score recompute
  26. 2026-09-02 21:12 UTCGHSA enrichment
  27. 2026-09-02 14:12 UTCEPSS rescore
  28. 2026-09-01 19:55 UTCEG score recompute
  29. 2026-09-01 19:55 UTCGHSA enrichment
  30. 2026-09-01 13:54 UTCEPSS rescore
  31. 2026-09-01 04:40 UTCEPSS rescore
  32. 2026-09-01 04:40 UTCEPSS rescore
  33. 2026-08-31 19:39 UTCEG score recompute
  34. 2026-08-31 19:39 UTCGHSA enrichment
  35. 2026-08-30 19:18 UTCEPSS rescore
  36. 2026-08-30 19:17 UTCEPSS rescore
  37. 2026-08-30 18:39 UTCEG score recompute
  38. 2026-08-30 18:39 UTCGHSA enrichment
  39. 2026-08-30 01:22 UTCEPSS rescore
  40. 2026-08-29 18:24 UTCEG score recompute
  41. 2026-08-29 18:24 UTCGHSA enrichment
  42. 2026-08-28 21:42 UTCEPSS rescore
  43. 2026-08-28 18:09 UTCGHSA enrichment
  44. 2026-08-27 15:56 UTCEG score recompute
  45. 2026-08-27 15:56 UTCGHSA enrichment
  46. 2026-08-27 14:25 UTCEPSS rescore
  47. 2026-08-26 15:40 UTCEG score recompute
  48. 2026-08-26 15:40 UTCGHSA enrichment
  49. 2026-08-26 14:47 UTCEPSS rescore
  50. 2026-08-25 15:23 UTCEG score recompute
  51. 2026-08-25 15:23 UTCGHSA enrichment
  52. 2026-08-25 14:26 UTCEG score recompute
  53. 2026-08-25 14:26 UTCGHSA enrichment
  54. 2026-08-25 13:49 UTCEPSS rescore
  55. 2026-08-24 14:18 UTCEPSS rescore
  56. 2026-08-24 14:11 UTCEG score recompute
  57. 2026-08-24 14:11 UTCGHSA enrichment
  58. 2026-08-23 13:56 UTCEG score recompute
  59. 2026-08-23 13:56 UTCGHSA enrichment
  60. 2026-08-23 00:19 UTCEPSS rescore
  61. 2026-08-22 13:42 UTCEG score recompute
  62. 2026-08-22 13:42 UTCGHSA enrichment
  63. 2026-08-21 23:49 UTCEPSS rescore
  64. 2026-08-21 13:26 UTCEG score recompute
  65. 2026-08-21 13:26 UTCGHSA enrichment
  66. 2026-08-20 22:56 UTCEPSS rescore
  67. 2026-08-20 13:11 UTCEG score recompute
  68. 2026-08-20 13:11 UTCGHSA enrichment
  69. 2026-08-20 09:24 UTCEG score recompute
  70. 2026-08-20 08:37 UTCEG score recompute
  71. 2026-08-20 08:36 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-77014?
CVE-2026-77014 is a medium vulnerability published on August 20, 2026. A flaw was found in libsoup's SoupServer HTTP Range header processing. The sortranges() comparator in soup-message-headers.c truncates a 64-bit subtraction result to 32-bit int, flipping the sign for range offsets differing by more than INTMAX. This causes silent omission of requested byte ranges…
When was CVE-2026-77014 disclosed?
CVE-2026-77014 was first published in the National Vulnerability Database on August 20, 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-2026-77014 actively exploited?
CVE-2026-77014 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 85.6% of all scored CVEs.
What is the CVSS score of CVE-2026-77014?
CVE-2026-77014 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-77014?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-77014, 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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