01 Record
CVE-2026-105766
Chainguard Academy (edu) Nginx directory redirect downgrades HTTPS requests to HTTP
LowPUBLISHEDCNA: chainguard
CNA base score2.3 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
02 Description
Chainguard Academy (edu) Nginx directory redirect downgrades HTTPS requests to HTTP
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.
- EPSS probability
- 0.10% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 1.0% of scored records. A rank, not a probability.
- NVD base score
- 2.3 (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:P/VC:N/VI:L/VA:N/SC:N/SI:N/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
- Deferred. NVD last modified this record on 2026-10-06.
- 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
- 2026-10-05 19:45Z24 DAYS AGO
- Last updated
- 2026-10-06 13:44Z23 DAYS AGO
- Reserved
- 2026-10-05
- Assigning CNA
- chainguard
- Record state
- PUBLISHED
- Severity
- Low (CVSS 2.3)
- CNA CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
- Weaknesses
- CWE-319Cleartext Transmission of Sensitive InformationBase
- Data version
- 5.2
- Document digest
- 0997cf38f94d75c5a9d179cb04fec026194976f951415bc8c62270cf9e0e9d93
05 Affected products
VendorProductVersionsPlatforms
ChainguardChainguard Academy (edu)0b75ff98057f69b044a3e7194e428066ac5ad0d4 to < 93dc0e50739c225f5aee2e803800a47fc0feb906—
06 References
- github.comFix commit 93dc0e5https://github.com/chainguard-dev/edu/commit/93dc0e50739c225f5aee2e803800a47fc0feb906
- github.comchainguard-dev/edu#3989https://github.com/chainguard-dev/edu/pull/3989
07 Remediation
Fixed in commit 93dc0e50739c225f5aee2e803800a47fc0feb906, which hardcodes the https scheme in the redirect. The fix is deployed to edu.chainguard.dev; no user action is required.