Vulnerability in libhttp-date-perl (UBUNTU-CVE-2026-14741)
Summary
Vulnerability in libhttp-date-perl (UBUNTU-CVE-2026-14741). Risk of unauthorized operations or information disclosure. Exploitable via Date. Mitigation: upgrade to 6.05-1ubuntu0.1 or later.
Original description
The description as published by the source.
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.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as UBUNTU-CVE-2026-14741 has been found in libhttp-date-perl.
Attackers can target a specific entry point like Date over the network to misuse the product.
Risk of unauthorized operations or information disclosure.
What to do: upgrade libhttp-date-perl to 6.05-1ubuntu0.1 or later.
If unsure, ask your IT team or search "libhttp-date-perl UBUNTU-CVE-2026-14741" on the vendor's site.
UBUNTU-CVE-2026-14741 (libhttp-date-perl)
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: Date / Expires
Patched: 6.05-1ubuntu0.1 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (unclassified) exists in libhttp-date-perl. Attackers reach the vulnerable code path via Date without authentication.
Check the vendor advisory for the affected versions of libhttp-date-perl. Attack surface: Date / Expires.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 6.05-1ubuntu0.1.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'libhttp-date-perl' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'libhttp-date-perl' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
libhttp-date-perlを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade libhttp-date-perl to 6.05-1ubuntu0.1ステージング環境で 6.05-1ubuntu0.1 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
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3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory ubuntu.com
- report ubuntu.com
- report cve.org