CVE-2026-59939

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 65% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this weekElevated
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%CVSS: 7.5Exploit: Elevated riskExposed: 0

A fix is available — apply it.

httplib2 is a comprehensive HTTP client library for Python. Prior to 0.32.0, httplib2 performs unbounded decompression of HTTP response bodies encoded with Content-Encoding: gzip or deflate in _decompressContent in httplib2/init.py, allowing a malicious or compromised HTTP server to return a small compressed payload that expands to an arbitrarily large size in memory and causes MemoryError or OOM-kill in the client process. This issue is fixed in version 0.32.0.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
65(Attend)
EG Risk 65/100SSVC: Attend

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%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

Published

July 8, 2026

Last Modified

August 20, 2026

Advisory Details (2)

Auto-updated Jul 8, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github.
github Patch Available🟡 PoC Available

Decompression Bomb Denial of Service via Unbounded gzip/deflate Response Handling · Advisory · httplib2/httplib2 · GitHub

https://github.com/httplib2/httplib2/security/advisories/GHSA-j5g9-f88f-gfj3
github_commit

commit 87581ad6cf75 (httplib2/httplib2)

Fix landed in httplib2/httplib2 commit 87581ad6cf75 — awaiting tagged release

https://github.com/httplib2/httplib2/commit/87581ad6cf752fe3da2090c59058261d2d00a427

Vendor Advisories for CVE-2026-59939(11)

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

Patch Availability(15)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntupython3-httplib2 (0.22.0-1ubuntu0.1) @ resolute2026-08-25ubuntu
redhatfence-agents-0:4.10.0-62.el9_4.272026-08-05redhat
redhatfence-agents-0:4.10.0-43.el9_2.242026-08-05redhat
redhatfence-agents-0:4.10.0-86.el9_6.192026-08-05redhat
redhatansible-automation-platform-27/lightspeed-rhel9:17853752732026-08-04redhat
redhatfence-agents-0:4.10.0-110.el9_8.52026-08-04redhat
redhatansible-automation-platform-25/lightspeed-rhel8:17854301742026-08-04redhat
redhatansible-automation-platform-26/lightspeed-rhel9:17857753602026-08-04redhat
redhatfence-agents-0:4.16.0-5.el10_0.122026-08-04redhat
redhatfence-agents-0:4.16.0-21.el10_2.52026-07-31redhat
redhatfence-agents-0:4.2.1-129.el8_10.272026-07-30redhat
redhatfence-agents-0:4.2.1-89.el8_6.242026-07-30redhat
redhatfence-agents-0:4.2.1-112.el8_8.192026-07-30redhat
redhatfence-agents-0:4.2.1-65.el8_4.302026-07-30redhat
redhatmta/mta-solution-server-rhel9:17841098832026-07-21redhat

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

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
python-httplib20.18.1-3 ... 0.32.0-1 (11 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
python-httplib20.20.4-3, 0.22.0-1, 0.31.2-1, 0.31.2-2, 0.32.0-1——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
python-httplib20.22.0-1, 0.31.2-1, 0.31.2-2, 0.32.0-1——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
python-httplib20.22.0-1, 0.31.2-1, 0.31.2-20.32.0-1—
PyPI(1)
PackageVulnerable rangeFixed inDependents
httplib20.10.3 ... 0.9.2 (44 versions)0.32.0—

Weakness Classification(1)

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

Additional Vendor Advisories

(5)

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 25× in last 7d / 117× 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 156 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-59939?
CVE-2026-59939 is a high vulnerability published on July 8, 2026. httplib2 is a comprehensive HTTP client library for Python. Prior to 0.32.0, httplib2 performs unbounded decompression of HTTP response bodies encoded with Content-Encoding: gzip or deflate in _decompressContent in httplib2/init.py, allowing a malicious or compromised HTTP server to return a small…
When was CVE-2026-59939 disclosed?
CVE-2026-59939 was first published in the National Vulnerability Database on July 8, 2026, with the most recent update on August 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-59939 actively exploited?
CVE-2026-59939 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 64.9% of all scored CVEs.
What is the CVSS score of CVE-2026-59939?
CVE-2026-59939 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-59939?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-59939, 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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