---
title: "CVE-2026-14741\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2026-14741?format=md
keywords: index, follow
---

# CVE-2026-14741

Publication date 10 July 2026

Last updated 7 August 2026

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**7.5 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2026-14741?format=md#impact-score)

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## Description

HTTP::Date versions before 6.08 for Perl allow CPU exhaustion via
polynomial regex backtracking in parse\_date.
parse\_date() matches the date string against a chain of alternative
regexes, and str2time() delegates to it. Several of these patterns place
unbounded quantifiers next to each other before a trailing `\s\*$` anchor. A
valid date prefix followed by a long interior run of digits, letters, or
whitespace and a single trailing byte that defeats the final match forces
the engine to repartition the run, giving polynomial (about quadratic)
backtracking. A header value of a few tens of kilobytes runs for tens of
seconds of CPU.
HTTP::Date parses timestamps such as HTTP `Date`, `Expires`, and
`Last-Modified` headers, which commonly originate from untrusted sources.
Any caller that passes an untrusted date header to str2time() or
parse\_date() can be driven to consume unbounded CPU, a denial of service.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| libhttp-date-perl | 26.04 LTS resolute | Fixed 6.06-1ubuntu0.26.04.1 |
| 24.04 LTS noble | Fixed 6.06-1ubuntu0.24.04.1 |
| 22.04 LTS jammy | Fixed 6.05-1ubuntu0.1 |
| 20.04 LTS focal | Needs evaluation |
| 18.04 LTS bionic | Needs evaluation |
| 16.04 LTS xenial | Needs evaluation |
| 14.04 LTS trusty | Needs evaluation |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)
* [Patch details](https://ubuntu.com/security/CVE-2026-14741?format=md#patch-details)

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| libhttp-date-perl | * Upstream:   [78c2095](https://github.com/libwww-perl/HTTP-Date/commit/78c20952cdfbf11e03cf1199ad70f13298a84c5c) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.5 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | None |
  | Integrity impact | None |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.5 · High |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-14741)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-14741)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2026-14741)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2026-14741)

### Related Ubuntu Security Notices (USN)

+ [USN-8599-1](https://usn.ubuntu.com/USN-8599-1)
+ HTTP-Date vulnerability
+ 23 July 2026

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2026-14741>