CVE-2026-13697

CRITICALNVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.1 under NVD CVSS v3. EPSS exploit probability: 0.6% (45th percentile of EPSS-scored CVEs). 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, nvd
Trending — 3 sources updated this week
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 9.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

undici's cache interceptor mishandles malformed Cache-Control private directives. In undici 7.0.0 up to before 7.29.0 and 8.0.0 up to before 8.9.0, a response carrying a degenerate qualified private directive, such as private set to an empty value, can be stored in the default shared cache and later served to a different caller with the same cache key, disclosing private response bodies and headers including Set-Cookie. Separately, a Cache-Control header that combines an unqualified private directive with a qualified one triggers an uncaught TypeError in the cache-control parser, which rejects the request and, depending on the consumer's error handling, can terminate the process. Both issues affect applications using the cache interceptor in shared mode, including the default configuration. The issues are fixed in undici 7.29.0 and 8.9.0.

CVSS v3
9.1
EG Score
9.1CRITICALmedium confidence
EG Risk
46
EG Risk 46/100CISA 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
Severity91% × 45%
Exploitation1% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.6%
EPSS %ILE
45th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact total (CVSS ≥ 9.0). 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

July 29, 2026

Last Modified

August 4, 2026

Advisory Details (2)

Auto-updated Sep 16, 2026
Patch available. Sources: github.
github Patch Available

undici vulnerable to cross-user information disclosure and parse-time crash via degenerate private cache directives · Advisory · nodejs/undici · GitHub

https://github.com/nodejs/undici/security/advisories/GHSA-4cwx-7wf7-3272
generic

Security Advisories | OpenJS Foundation CVE Numbering Authority

https://cna.openjsf.org/security-advisories.html

Vendor Advisories for CVE-2026-13697(3)

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

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatnodejs24-main-24.18.1-0.1.hum12026-07-30redhat
redhatnodejs26-main-26.5.1-1.5.hum12026-07-29redhat

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:12(1)
PackageVulnerable rangeFix by version rangeDependents
node-undici5.15.0+dfsg1+~cs20.10.9.3-1 ... 8.9.0+dfsg+~cs3.2.0-1 (40 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
node-undici7.15.0+dfsg+~cs3.2.0-1 ... 8.9.0+dfsg+~cs3.2.0-1 (16 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
node-undici7.15.0+dfsg+~cs3.2.0-1 ... 8.5.0+dfsg+~cs3.2.0-3 (14 versions)
  • every version up to 8.9.0+dfsg+~cs3.2.0-1: fixed in 8.9.0+dfsg+~cs3.2.0-1
—
npm(1)
PackageVulnerable rangeFix by version rangeDependents
undici—
  • 7.0.0 up to 7.29.0: fixed in 7.29.0
  • 8.0.0 up to 8.9.0: fixed in 8.9.0
—

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 21× in last 7d / 116× 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 324 total refreshes for this CVE.

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

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

Frequently asked(5)

What is CVE-2026-13697?
CVE-2026-13697 is a critical vulnerability published on July 29, 2026. undici's cache interceptor mishandles malformed Cache-Control private directives. In undici 7.0.0 up to before 7.29.0 and 8.0.0 up to before 8.9.0, a response carrying a degenerate qualified private directive, such as private set to an empty value, can be stored in the default shared cache and…
When was CVE-2026-13697 disclosed?
CVE-2026-13697 was first published on July 29, 2026, with the most recent update on August 4, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-13697 actively exploited?
CVE-2026-13697 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (45th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-13697?
CVE-2026-13697 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-13697?
A fix for CVE-2026-13697 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-13697 are linked in the Vendor Advisories panel on this page.

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