Answer in brief
CVE-2026-41677 records a Unknown severity vulnerability in rust-opennssl has an Out-of-bounds read in PEM password callback when returning an oversized length. The current sources do not mark it as known exploited. The current feed maps openssl (crates.io). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps openssl (crates.io). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| opensslcrates.io | >=0.9.0 <0.10.78 | 0.10.78 |
Published upstream
Apr 19, 2026
Evidence: source:osv:source_dates:source-dates:recordSource modified
Nov 10, 2026
Evidence: source:osv:source_dates:source-dates:recordFirst seen by HOL
Nov 10, 2026
The `*_from_pem_callback` functions, such as `EcKey::private_key_from_pem_callback`, pass the length returned by the user's password callback to OpenSSL without checking it against the size of the buffer the callback was given. If the callback reports more bytes than the buffer holds, some OpenSSL versions read past the end of the buffer while deriving the decryption key. OpenSSL 3.x is not affected. 0.10.78 treats a returned length larger than the buffer as a failed callback.
Quoted source text, attributed separately from HOL analysis.