CVE-2026-79782
rclone before 1.74.4 Security Token Disclosure via HTTPS to HTTP Redirect
Description
rclone before 1.74.4 fails to strip the X-Amz-Security-Token header when an S3 redirect changes scheme from HTTPS to HTTP on the same host. Attackers can intercept plaintext HTTP traffic to capture AWS STS session tokens sent in request headers.
INFO
Published Date :
Aug. 25, 2026, 4:17 p.m.
Last Modified :
Aug. 25, 2026, 4:17 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-79782
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | LOW | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | LOW | [email protected] | ||||
| CVSS 4.0 | CRITICAL | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | CRITICAL | [email protected] |
Solution
- Update rclone to version 1.74.4 or newer.
- Ensure all S3 operations use HTTPS consistently.
- Monitor traffic for insecure HTTP redirects.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-79782.
| URL | Resource |
|---|---|
| https://github.com/rclone/rclone/security/advisories/GHSA-gx4c-2hqx-cw2r | |
| https://www.vulncheck.com/advisories/rclone-before-security-token-disclosure-via-https-to-http-redirect |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-79782 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-79782
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-79782 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-79782 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Aug. 25, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'rclone', 'product': 'rclone', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '1.74.4', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '1.74.4', 'versionType': 'semver'}], 'packageURL': 'pkg:golang/github.com/rclone/rclone', 'defaultStatus': 'unaffected'}] Added Description rclone before 1.74.4 fails to strip the X-Amz-Security-Token header when an S3 redirect changes scheme from HTTPS to HTTP on the same host. Attackers can intercept plaintext HTTP traffic to capture AWS STS session tokens sent in request headers. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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 Added CVSS V3.1 AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N Added CWE CWE-319 Added Reference https://github.com/rclone/rclone/security/advisories/GHSA-gx4c-2hqx-cw2r Added Reference https://www.vulncheck.com/advisories/rclone-before-security-token-disclosure-via-https-to-http-redirect