Description
A flaw was found in Privoxy in versions before 3.0.29. Dereference of a NULL-pointer that could result in a crash if accept-intercepted-requests was enabled, Privoxy failed to get the request destination from the Host header and a memory allocation failed.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | privoxy | Privoxy 3.0.29 | — |
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 | privoxy | 3.0.29-1 | — |
| Debian 13 | privoxy | 3.0.29-1 | — |
| Debian 12 | privoxy | 3.0.29-1 | — |
| Debian 9 | privoxy | 3.0.26-3+deb9u1 | DLA-2548-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | privoxy | 3.0.28-2ubuntu0.1 | USN-4886-1 |
| Ubuntu 18.04 LTS | privoxy | 3.0.26-5ubuntu0.1 | USN-4886-1 |
| Ubuntu 16.04 LTS | privoxy | 3.0.24-1ubuntu0.1 | USN-4886-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | privoxy | 3.0.21-7+deb8u1ubuntu0.1~esm1 | USN-4886-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | privoxy | 3.0.29-r0 | — |
| Alpine v3.23 | privoxy | 3.0.29-r0 | — |
| Alpine v3.22 | privoxy | 3.0.29-r0 | — |
| Alpine v3.21 | privoxy | 3.0.29-r0 | — |
| Alpine v3.20 | privoxy | 3.0.29-r0 | — |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | privoxy | 3.0.29-r0 | — |
| Alpine v3.18 | privoxy | 3.0.29-r0 | — |
| Alpine v3.17 | privoxy | 3.0.29-r0 | — |
| Alpine v3.16 | privoxy | 3.0.29-r0 | — |
| Alpine v3.15 | privoxy | 3.0.29-r0 | — |
| Alpine v3.14 | privoxy | 3.0.29-r0 | — |
| Alpine v3.13 | privoxy | 3.0.29-r0 | — |
| Alpine v3.12 | privoxy | 3.0.29-r0 | — |
Advisories 2
- USN-4886-1 privoxy vulnerabilities Ubuntu Security Notices (USN) · Jun 29, 2026
- DLA-2548-1 privoxy - security update Debian Security (DSA / DLA) · Mar 9, 2026