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01 Record

CVE-2026-64645

Next.js: Server-Side Request Forgery in rewrites via attacker-controlled destination hostname

HighPUBLISHEDCNA: GitHub_M
CNA base score8.3 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:L/SI:L/SA:N
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02 Description

Next.js: Server-Side Request Forgery in rewrites via attacker-controlled destination hostname

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.41% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 35.3% of scored records. A rank, not a probability.
NVD base score
8.3 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD analysis status
Analyzed. NVD last modified this record on 2026-10-24.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-07-27 17:37Z3 MO AGO
Last updated
2026-07-28 14:02Z3 MO AGO
Reserved
2026-07-20
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
High (CVSS 8.3)
CNA CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:L/SI:L/SA:N
Weaknesses
  • CWE-601URL Redirection to Untrusted Site ('Open Redirect')Base
  • CWE-918Server-Side Request Forgery (SSRF)Base
Data version
5.2
Document digest
75154b5adccb9c8eb952c8f88986c545ef9cb0602b42b0e14e41ca4acc533cba

05 Affected products

VendorProductVersionsPlatforms
vercelnext.js>= 12.0.0 < 15.5.21, >= 16.0.0, < 16.2.11—

06 References