Description
An issue was discovered in ssl.c in Axel before 2.17.8. The TLS implementation lacks hostname verification.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | axel | 2.17.8-1 | — |
| Debian 13 | axel | 2.17.8-1 | — |
| Debian 12 | axel | 2.17.8-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | axel | 2.17.5-1ubuntu1+esm1 | USN-4872-1 |
| Ubuntu Pro 18.04 LTS | axel | 2.16.1-1ubuntu0.1~esm1 | USN-4872-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP1 | axel | 2.17.8-bp151.4.3.1 | openSUSE-SU-2020:0785-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | axel | 2.17.10-1.6 | openSUSE-SU-2024:10645-1 |
| openSUSE Leap 15.1 | axel | 2.17.8-lp151.3.3.1 | openSUSE-SU-2020:0778-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | axel | 2.17.8-r0 | — |
| Alpine v3.23 | axel | 2.17.8-r0 | — |
| Alpine v3.22 | axel | 2.17.8-r0 | — |
| Alpine v3.21 | axel | 2.17.8-r0 | — |
| Alpine v3.20 | axel | 2.17.8-r0 | — |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | axel | 2.17.8-r0 | — |
| Alpine v3.18 | axel | 2.17.8-r0 | — |
| Alpine v3.17 | axel | 2.17.8-r0 | — |
| Alpine v3.16 | axel | 2.17.8-r0 | — |
| Alpine v3.15 | axel | 2.17.8-r0 | — |
| Alpine v3.14 | axel | 2.17.8-r0 | — |
| Alpine v3.13 | axel | 2.17.8-r0 | — |
| Alpine v3.12 | axel | 2.17.8-r0 | — |
| Alpine v3.11 | axel | 2.17.6-r1 | — |
| Alpine v3.10 | axel | 2.17.3-r1 | — |
| Alpine v3.9 | axel | 2.16.1-r3 | — |
Advisories 4
- USN-4872-1 axel vulnerability Ubuntu Security Notices (USN) · Feb 10, 2026
- openSUSE-SU-2020:0785-1 Security update for axel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10645-1 axel-2.17.10-1.6 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:0778-1 Security update for axel SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://github.com/axel-download-accelerator/axel/issues/262
- https://github.com/axel-download-accelerator/axel/releases/tag/v2.17.8
- openSUSE-SU-2020:0778 vendor-advisory
- openSUSE-SU-2020:0785 vendor-advisory
- FEDORA-2021-5214bd8f14 vendor-advisory
- FEDORA-2021-90b4716992 vendor-advisory