CVE-2026-10725

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-06. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Protocol::HTTP2 versions before 1.13 for Perl is vulnerable to a HTTP/2 Bomb.

Protocol::HTTP2's inbound HPACK path has no header-list size limit, so a small HTTP/2 request can expand into large server memory (the "HTTP/2 bomb").

The headers_decode method materialises a full key+value copy per indexed reference with no running size check, and the stream_header_block_add method appends (since version 1.12) every CONTINUATION frame to the per-stream buffer unbounded.

MAX_HEADER_LIST_SIZE (default 65536) is advertised in SETTINGS but never consulted on decode. It is absent from the decoder and from the :limits export tag.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100

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
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
EPSS PROB
0.4%
EPSS %ILE
33rd
KEV
Not listed

Published

June 6, 2026

Last Modified

July 23, 2026

Advisory Details (5)

Auto-updated Jun 9, 2026
Patch available.
generic
https://security.metacpan.org/patches/P/Protocol-HTTP2/1.12/CVE-2026-10725-r2.patch
generic
https://github.com/vlet/p5-Protocol-HTTP2/commit/822bf22224adbd662e8d0b865eeacb2b294d16cd.patch
generic

Client Challenge

https://metacpan.org/release/CRUX/Protocol-HTTP2-1.12/source/lib/Protocol/HTTP2/Stream.pm#L414
generic

lib/Protocol/HTTP2/HeaderCompression.pm - metacpan.org

https://metacpan.org/release/CRUX/Protocol-HTTP2-1.12/source/lib/Protocol/HTTP2/HeaderCompression.pm#L133
generic

Changes - metacpan.org

https://metacpan.org/release/CRUX/Protocol-HTTP2-1.13/changes

Vendor Advisories for CVE-2026-10725(1)

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

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
libprotocol-http2-perl1.10-1 ... 1.13-1 (7 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
libprotocol-http2-perl1.10-2 ... 1.14-1 (7 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
libprotocol-http2-perl1.11-1, 1.12-1, 1.12-2, 1.13-1, 1.14-1
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
libprotocol-http2-perl1.11-1, 1.12-1
  • every version up to 1.12-2: fixed in 1.12-2
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 25× 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 256 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

Same product

1 shown

Debian:12:libprotocol-http2-perl

Frequently asked(5)

What is CVE-2026-10725?
CVE-2026-10725 is a high vulnerability published on June 6, 2026. Protocol::HTTP2 versions before 1.13 for Perl is vulnerable to a HTTP/2 Bomb. Protocol::HTTP2's inbound HPACK path has no header-list size limit, so a small HTTP/2 request can expand into large server memory (the "HTTP/2 bomb"). The headersdecode method materialises a full key+value copy per…
When was CVE-2026-10725 disclosed?
CVE-2026-10725 was first published on June 6, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-10725 actively exploited?
CVE-2026-10725 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-10725?
CVE-2026-10725 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-10725?
A fix for CVE-2026-10725 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-10725 are linked in the Vendor Advisories panel on this page.

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