Description
uap-core in an open-source npm package which contains the core of BrowserScope's original user agent string parser. In uap-core before version 0.11.0, some regexes are vulnerable to regular expression denial of service (REDoS) due to overlapping capture groups. This allows remote attackers to overload a server by setting the User-Agent header in an HTTP(S) request to maliciously crafted long strings. This is fixed in version 0.11.0. Downstream packages such as uap-python, uap-ruby etc which depend upon uap-core follow different version schemes.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| ua-parser | uap-core | < 0.11.0 | — |
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.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | uap-core | No fix yet | — |
| Ubuntu 26.04 LTS | uap-core | No fix yet | — |
| Ubuntu 25.10 | uap-core | No fix yet | — |
| Ubuntu 24.04 LTS | uap-core | No fix yet | — |
| Ubuntu 22.04 LTS | uap-core | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | uap-core | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | uap-core | < 0.11.0 | 0.11.0 | GHSA-p4pj-mg4r-x6v4 |