CVE-2019-16140
Use-after-free in chttp
An issue was discovered in the chttp crate before 0.1.3 for Rust. There is a use-after-free during buffer conversion.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
An issue was discovered in the chttp crate before 0.1.3 for Rust. There is a use-after-free during buffer conversion.
- Record
CVE-2019-16140- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-416
- Updated
- 2026-11-02
CVE List No score
An issue was discovered in the chttp crate before 0.1.3 for Rust. There is a use-after-free during buffer conversion.
- Record
CVE-2019-16140- Updated
- 2026-11-02
EUVDEUVD-2021-1581 No score
An issue was discovered in the chttp crate before 0.1.3 for Rust. There is a use-after-free during buffer conversion.
- Record
EUVD-2021-1581- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-5rrv-m36h-qwf8
Use-after-free in chttp
The From implementation for Vec was not properly implemented, returning a vector backed by freed memory. This could lead to memory corruption or be exploited to cause undefined behavior.
A fix was published in version 0.1.3.
- Record
GHSA-5rrv-m36h-qwf8- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-416
- Updated
- 2026-11-02
OSV
An issue was discovered in the chttp crate before 0.1.3 for Rust. There is a use-after-free during buffer conversion.
- Record
CVE-2019-16140- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-5rrv-m36h-qwf8
Use-after-free in chttp
The From implementation for Vec was not properly implemented, returning a vector backed by freed memory. This could lead to memory corruption or be exploited to cause undefined behavior.
A fix was published in version 0.1.3.
- Record
GHSA-5rrv-m36h-qwf8- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-416
- Updated
- 2026-11-02
OSVRUSTSEC-2019-0016
Use-after-free in buffer conversion implementation
The From<Buffer> implementation for Vec<u8> was not properly implemented, returning a vector backed by freed memory. This could lead to memory corruption or be exploited to cause undefined behavior.
A fix was published in version 0.1.3.
- Record
RUSTSEC-2019-0016- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
chttpcrates.io |
0.1.1 up to 0.1.3 | 0.1.3 |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-16140 is a critical vulnerability (CVSS 9.8) in Isahc Project Isahc, published September 1, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.63%, the 76th percentile. Fixed in chttp 0.1.3.