CVE-2026-41677— rust-openssl: Out-of-bounds read in PEM password callback when user callback returns an oversized length
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I. Basic Information for CVE-2026-41677
Vulnerability Information
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Vulnerability Title
rust-openssl: Out-of-bounds read in PEM password callback when user callback returns an oversized length
Source: NVD (National Vulnerability Database)
Vulnerability Description
rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.9.0 to before 0.10.78, the *_from_pem_callback APIs did not validate the length returned by the user's callback. A password callback that returns a value larger than the buffer it was given can cause some versions of OpenSSL to over-read this buffer. OpenSSL 3.x is not affected by this. This vulnerability is fixed in 0.10.78.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存读
Source: NVD (National Vulnerability Database)
Vulnerability Title
rust-openssl 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
rust-openssl是rust-openssl开源的一个用于与 OpenSSL 库进行交互的库。 rust-openssl 0.9.0版本至0.10.78之前版本存在缓冲区错误漏洞，该漏洞源于*_from_pem_callback API未验证用户回调返回的长度，密码回调返回大于给定缓冲区的值可能导致某些OpenSSL版本过度读取该缓冲区。
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 |
|---|---|---|---|---|
| rust-openssl | rust-openssl | >= 0.9.0, < 0.10.78 | - |
II. Public POCs for CVE-2026-41677
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · rust-openssl · 2026-04-24 · 5 CVEs total
| CVE-2026-41678 | rust-openssl: Incorrect bounds assertion in aes key wrap | |
| CVE-2026-41676 | rust-openssl: Deriver::derive and PkeyCtxRef::derive can overflow short buffers on OpenSSL | |
| CVE-2026-41681 | rust-openssl: MdCtxRef::digest_final() writes past caller buffer with no length check | |
| CVE-2026-41898 | rust-openssl: Unchecked callback-returned length in PSK and cookie generate trampolines ca |
IV. Related Vulnerabilities
Same product: rust-openssl
- CVE-2026-41898
rust-openssl: Unchecked callback-returned length in PSK and - CVE-2026-41681
rust-openssl: MdCtxRef::digest_final() writes past caller bu - CVE-2026-41678
rust-openssl: Incorrect bounds assertion in aes key wrap - CVE-2026-41676
rust-openssl: Deriver::derive and PkeyCtxRef::derive can ove - CVE-2025-24898
rust openssl ssl::select_next_proto use after free
Same vendor: rust-openssl
Same weakness: CWE-125
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V. Comments for CVE-2026-41677
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