CVE-2025-49826

HIGHNVD 7.57.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2025-07-03. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 3 sources updated this week

Also known asEUVD-2025-19910 (ENISA EUVD) · GHSA-67rr-84xm-4c7r (GitHub Security Advisories)Source: ENISA EUVD

7.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.1%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Next.js is a React framework for building full-stack web applications. From versions 15.0.4-canary.51 to before 15.1.8, a cache poisoning bug leading to a Denial of Service (DoS) condition was found in Next.js. This issue does not impact customers hosted on Vercel. Under certain conditions, this issue may allow a HTTP 204 response to be cached for static pages, leading to the 204 response being served to all users attempting to access the page. This issue has been addressed in version 15.1.8.

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 impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation1.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
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
1.1%
EPSS %ILE
66th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
1.1% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; 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 (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 3, 2025

Last Modified

September 10, 2025

Advisory Details (4)

Auto-updated Nov 1, 2026
Patch available. Sources: github_commit, github_release, github.
Web page

CVE-2025-49826 - Vercel

https://vercel.com/changelog/cve-2025-49826
GitHub advisoryMentions a patch (unverified)

DoS via cache poisoning · Advisory · vercel/next.js · GitHub

https://github.com/vercel/next.js/security/advisories/GHSA-67rr-84xm-4c7r
GitHub release Patch Available

v15.1.8

Patch available: vercel/next.js v15.1.8

https://github.com/vercel/next.js/releases/tag/v15.1.8
GitHub commit

commit a15b974ed707 (vercel/next.js)

Fix landed in vercel/next.js commit a15b974ed707 — awaiting tagged release

https://github.com/vercel/next.js/commit/a15b974ed707d63ad4da5b74c1441f5b7b120e93

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
npmnext @ 15.1.8 (fixes >= 15.0.4-canary.51, < 15.1.8)—ghsa

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

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFix by version rangeDependents
next—
  • 15.0.4-canary.51 up to 15.1.8: fixed in 15.1.8
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 39× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 95 of 204 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 5 repeat rows among the latest 100 are merged into the row they repeat. The 109 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:43 UTCEPSS rescoreEPSS 1.1% · 66th percentile
  2. 2026-11-01 16:33 UTCEPSS rescoreEPSS 1.1% · 66th percentile
  3. 2026-11-01 08:05 UTCGHSA enrichmentGHSA-67rr-84xm-4c7r · GitHub severity HIGH · GitHub CVSS 7.5
  4. 2026-11-01 08:05 UTCEG score recompute
  5. 2026-10-31 16:31 UTCEPSS rescoreEPSS 1.1% · 66th percentile
  6. 2026-10-30 16:32 UTCEPSS rescoreEPSS 1.1% · 66th percentile
  7. 2026-10-29 16:31 UTCEPSS rescoreEPSS 1.1% · 66th percentile
  8. 2026-10-28 16:30 UTCEPSS rescoreEPSS 1.1% · 66th percentile
  9. 2026-10-27 16:30 UTCEPSS rescoreEPSS 1.1% · 66th percentile
  10. 2026-10-27 12:15 UTCEG score recompute
  11. 2026-10-26 16:30 UTCEPSS rescoreEPSS 1.1% · 66th percentile
  12. 2026-10-25 16:31 UTCEPSS rescoreEPSS 1.1% · 66th percentile
  13. 2026-10-25 16:21 UTCEG score recompute
  14. 2026-10-24 16:31 UTCEPSS rescoreEPSS 1.1% · 66th percentile
  15. 2026-10-23 16:30 UTCEPSS rescoreEPSS 1.1% · 66th percentile
  16. 2026-10-22 16:33 UTCEPSS rescoreEPSS 1.1% · 66th percentile
  17. 2026-10-21 16:31 UTCEPSS rescoreEPSS 1.1% · 66th percentile
  18. 2026-10-20 16:31 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  19. 2026-10-19 16:31 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  20. 2026-10-18 16:31 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  21. 2026-10-18 05:29 UTCEG score recompute
  22. 2026-10-17 16:33 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  23. 2026-10-16 16:38 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  24. 2026-10-15 16:31 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  25. 2026-10-14 16:31 UTCEPSS rescoreEPSS 1.1% · 65th percentile
Show 70 more
  1. 2026-10-13 16:32 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  2. 2026-10-12 16:59 UTCEG score recompute
  3. 2026-10-12 16:33 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  4. 2026-10-11 20:33 UTCEG score recompute
  5. 2026-10-11 18:45 UTCEG score recompute
  6. 2026-10-11 15:20 UTCEG score recompute
  7. 2026-10-11 13:47 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  8. 2026-10-10 19:59 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  9. 2026-10-09 20:06 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  10. 2026-10-08 17:10 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  11. 2026-10-07 23:47 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  12. 2026-10-06 15:17 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  13. 2026-10-05 17:42 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  14. 2026-10-04 23:21 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  15. 2026-10-03 14:24 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  16. 2026-10-02 10:11 UTCOSV refresh
  17. 2026-10-01 19:49 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  18. 2026-09-30 15:02 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  19. 2026-09-28 13:50 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  20. 2026-09-27 13:45 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  21. 2026-09-26 15:58 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  22. 2026-09-26 00:25 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  23. 2026-09-24 14:02 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  24. 2026-09-23 13:47 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  25. 2026-09-21 21:06 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  26. 2026-09-20 20:15 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  27. 2026-09-18 19:27 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  28. 2026-09-17 19:29 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  29. 2026-09-16 14:07 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  30. 2026-09-15 03:09 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  31. 2026-09-13 08:24 UTCOSV refresh
  32. 2026-09-12 15:00 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  33. 2026-09-11 14:52 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  34. 2026-09-11 09:36 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  35. 2026-09-10 09:34 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  36. 2026-09-08 21:59 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  37. 2026-09-07 16:00 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  38. 2026-09-06 13:46 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  39. 2026-09-05 15:28 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  40. 2026-09-04 05:06 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  41. 2026-09-02 14:11 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  42. 2026-09-01 13:53 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  43. 2026-09-01 04:38 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  44. 2026-08-30 19:16 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  45. 2026-08-30 01:21 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  46. 2026-08-28 21:40 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  47. 2026-08-27 14:24 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  48. 2026-08-26 14:45 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  49. 2026-08-25 13:48 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  50. 2026-08-25 09:41 UTCOSV refresh
  51. 2026-08-24 14:16 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  52. 2026-08-24 09:22 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  53. 2026-08-23 00:18 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  54. 2026-08-21 23:48 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  55. 2026-08-20 22:54 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  56. 2026-08-19 17:03 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  57. 2026-08-18 13:47 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  58. 2026-08-16 14:55 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  59. 2026-08-16 02:13 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  60. 2026-08-15 01:29 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  61. 2026-08-13 21:59 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  62. 2026-08-12 13:50 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  63. 2026-08-11 13:41 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  64. 2026-08-10 23:59 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  65. 2026-08-09 13:46 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  66. 2026-08-09 02:22 UTCOSV refresh
  67. 2026-08-08 16:36 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  68. 2026-08-06 13:46 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  69. 2026-08-05 19:16 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  70. 2026-08-04 15:09 UTCEPSS rescoreEPSS 1.0% · 60th percentile

Frequently asked(5)

What is CVE-2025-49826?
CVE-2025-49826 is a high-severity vulnerability; its CVE record was published on July 3, 2025. Next.js is a React framework for building full-stack web applications. From versions 15.0.4-canary.51 to before 15.1.8, a cache poisoning bug leading to a Denial of Service (DoS) condition was found in Next.js. This issue does not impact customers hosted on Vercel. Under certain conditions, this…
When was the CVE record for CVE-2025-49826 published?
The CVE record for CVE-2025-49826 was published on July 3, 2025. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 10, 2025; the record at its source may have been updated since.
Is CVE-2025-49826 actively exploited?
CVE-2025-49826 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.1% probability of exploitation in the next 30 days (66th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-49826?
CVE-2025-49826 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2025-49826?
A fix for CVE-2025-49826 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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