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01 Record

CVE-2026-49756

Multipart form-data header injection in Req via unescaped name/filename/content_type

LowPUBLISHEDCNA: EEF
CNA base score2.1 CVSS v4.0CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N
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02 Description

Multipart form-data header injection in Req via unescaped name/filename/content_type

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • 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
0.20% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 10.7% of scored records. A rank, not a probability.
NVD base score
2.1 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/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 2026-08-18.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

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
2026-06-08 15:20Z4 MO AGO
Last updated
2026-06-08 16:34Z4 MO AGO
Reserved
2026-06-01
Assigning CNA
EEF
Record state
PUBLISHED
Severity
Low (CVSS 2.1)
CNA CVSS vector
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N
Weaknesses
  • CWE-93Improper Neutralization of CRLF Sequences ('CRLF Injection')Base
Data version
5.2
Document digest
fd78822dc650aa69db7bf413a5d9285d6ea36a5db482602e5c48db1647e7b939

05 Affected products

VendorProductVersionsPlatforms
wojtekmachreq0.5.3 to < 0.6.0, 60253dbe9436cb8e9c738f895032f2e87939b597 to < 74506ff2c5addf74df85d79dc726e9b2e264a8ba—

06 References