CVE-2026-53797— rsync < 3.5.0 Symlink Race Condition Information Disclosure
Affected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| RsyncProject | rsync | ≤ 3.4.4 | affected |
3.5.0 | unaffected |
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I. Basic Information for CVE-2026-53797
Vulnerability Information
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Vulnerability Title
rsync < 3.5.0 Symlink Race Condition Information Disclosure
Source: CVE Program / CVE List V5
Vulnerability Description
rsync before 3.5.0 contains a symlink race condition vulnerability in the sender's source tree traversal that allows an attacker who can manipulate a parent directory of the source tree to redirect file reads to unintended paths. Attackers can atomically replace a parent directory component with a symlink pointing outside the source root between path resolution and file open operations to disclose file contents outside the intended transfer root.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: CVE Program / CVE List V5
Vulnerability Title
RsyncProject Rsync 竞争条件问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
RsyncProject Rsync是RsyncProject组织开源的一款速度快、功能极其强大的文件复制工具，可用于复制远程文件和本地文件。 RsyncProject Rsync 3.5.0之前版本存在安全漏洞，该漏洞源于发送方源树遍历中存在符号链接竞争条件，攻击者可操纵源树父目录并在路径解析与文件打开操作之间将父目录组件替换为指向源根目录之外的符号链接，导致文件读取被重定向到非预期路径，从而泄露预期传输根目录之外的文件内容。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| RsyncProject | rsync | 0 ~ 3.4.4 | - |
II. Public POCs for CVE-2026-53797
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-53797 (2)
Vendor Pages for CVE-2026-53797 (1)
- 🔗 Release v3.5.0 · RsyncProject/rsync · GitHubrelease-notes
Same Patch Batch · RsyncProject · 2026-08-13 · 33 CVEs total
| CVE-2026-53791 | 9.1 CRITICAL | rsync < 3.5.0 Daemon IP Spoofing via PROXY Protocol Header |
| CVE-2026-70461 | 8.2 HIGH | rsync 3.2.5 < 3.5.0 Heap Out-of-Bounds Write via files-from Entry |
| CVE-2026-70456 | 8.2 HIGH | rsync 3.0.1 < 3.5.0 Heap Out-of-Bounds Write via read_args() |
| CVE-2026-70458 | 8.2 HIGH | rsync 3.0.0 < 3.5.0 Out-of-Bounds Write via FLAG_HLINKED Handling |
| CVE-2026-70463 | 8.1 HIGH | rsync 3.1.0 < 3.5.0 Authorization Bypass via auth users Directive Parsing |
| CVE-2026-53790 | 8.1 HIGH | rsync < 3.5.0 Command Injection via Multiple Code Paths |
| CVE-2026-53795 | 8.1 HIGH | rsync < 3.5.0 Arbitrary File Write via --temp-dir/--link-dest |
| CVE-2026-70460 | 8.1 HIGH | rsync 2.3.3 < 3.5.0 Path Traversal via --partial-dir/--backup-dir Symlink |
| CVE-2026-53783 | 8.1 HIGH | rsync < 3.5.0 TOCTOU Race Condition Directory Escape via rrsync |
| CVE-2026-70454 | 8.0 HIGH | rsync < 3.5.0 TLS Certificate Validation Bypass via SSL/OpenSSL Mode |
| CVE-2026-53803 | 7.8 HIGH | rsync < 3.5.0 Symlink Following Arbitrary File Overwrite |
| CVE-2026-70455 | 7.5 HIGH | rsync 3.4.2 < 3.5.0 DoS via --zt Zstandard Compression Thread Exhaustion |
| CVE-2026-70464 | 7.5 HIGH | rsync 2.0.0 < 3.5.0 Connection Slot Exhaustion DoS via Handshake Stall |
| CVE-2026-70453 | 7.5 HIGH | rsync < 3.5.0 Algorithmic Complexity DoS via hash_search() |
| CVE-2026-70452 | 7.4 HIGH | rsync 3.1.0 < 3.5.0 Access Control Bypass via DNS Resolution Failure |
| CVE-2026-53793 | 7.4 HIGH | rsync < 3.5.0 Path Confinement Bypass via /./ Boundary Marker in Chroot Mode |
| CVE-2026-53802 | 7.1 HIGH | rsync < 3.5.0 Arbitrary File Read via Symlink Following |
| CVE-2026-53784 | 7.1 HIGH | rsync < 3.5.0 Path Traversal via Symlink Module Root |
| CVE-2026-53785 | 7.1 HIGH | rsync < 3.5.0 Path Traversal Write Escape via --relative Mode |
| CVE-2026-70462 | 6.5 MEDIUM | rsync 3.1.0 < 3.5.0 Signed Integer Overflow via MSG_IO_TIMEOUT |
Showing top 20 of 33 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: rsync
- CVE-2026-70452
rsync 3.1.0 < 3.5.0 Access Control Bypass via DNS Resolution - CVE-2026-70453
rsync < 3.5.0 Algorithmic Complexity DoS via hash_search() - CVE-2026-70454
rsync < 3.5.0 TLS Certificate Validation Bypass via SSL/Open - CVE-2026-70455
rsync 3.4.2 < 3.5.0 DoS via --zt Zstandard Compression Threa - CVE-2026-70456
rsync 3.0.1 < 3.5.0 Heap Out-of-Bounds Write via read_args()
Same vendor: RsyncProject
- CVE-2026-70452
rsync 3.1.0 < 3.5.0 Access Control Bypass via DNS Resolution - CVE-2026-70453
rsync < 3.5.0 Algorithmic Complexity DoS via hash_search() - CVE-2026-70454
rsync < 3.5.0 TLS Certificate Validation Bypass via SSL/Open - CVE-2026-70455
rsync 3.4.2 < 3.5.0 DoS via --zt Zstandard Compression Threa - CVE-2026-70456
rsync 3.0.1 < 3.5.0 Heap Out-of-Bounds Write via read_args()
V. Comments for CVE-2026-53797
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