CVE-2026-50275

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5%, top 59% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

The Datadog PHP Tracer provides application performance monitoring and distributed tracing for PHP. Prior to 1.19.2, ddtrace_deserialize_baggage in ext/distributed_tracing_headers.c parses incoming W3C baggage HTTP headers without enforcing DD_TRACE_BAGGAGE_MAX_ITEMS or DD_TRACE_BAGGAGE_MAX_BYTES. A remote unauthenticated client can send an arbitrarily large number of comma-separated key-value pairs or a single oversized value, causing the tracer to allocate hash-map entries and consume unbounded CPU and memory on each request. Baggage extraction is enabled by default in most affected deployments unless baggage is removed from DD_TRACE_PROPAGATION_STYLE or DD_TRACE_PROPAGATION_STYLE_EXTRACT. This issue is fixed in version 1.19.2.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
41%
KEV
Not listed

Published

September 17, 2026

Last Modified

September 18, 2026

Advisory Details (6)

Auto-updated Sep 17, 2026
Patch available. Sources: github, github_pr, github_commit, github_release.
github_release Patch Available

1.20.0

Patch available: DataDog/dd-trace-php 1.20.0

https://github.com/DataDog/dd-trace-php/releases/tag/1.20.0
github_release Patch Available

1.19.2

Patch available: DataDog/dd-trace-php 1.19.2

https://github.com/DataDog/dd-trace-php/releases/tag/1.19.2
github_commit

commit 43072ccafe55 (DataDog/dd-trace-php)

Fix landed in DataDog/dd-trace-php commit 43072ccafe55 — awaiting tagged release

https://github.com/DataDog/dd-trace-php/commit/43072ccafe55a5dbdfba75a42bf316b4150ae1e5
github_commit

commit 2f7987eb02e3 (DataDog/dd-trace-php)

Fix landed in DataDog/dd-trace-php commit 2f7987eb02e3 — awaiting tagged release

https://github.com/DataDog/dd-trace-php/commit/2f7987eb02e306bb62bce8ec4152dece68112f51
github_pr

Restrict the accepted amount of extracted tags and baggage

Fix merged in DataDog/dd-trace-php PR #3854 on 2026-05-06 — awaiting tagged release

https://github.com/DataDog/dd-trace-php/pull/3854
github Patch Available

Improper parsing of W3C baggage headers may lead to DoS · Advisory · DataDog/dd-trace-php · GitHub

https://github.com/DataDog/dd-trace-php/security/advisories/GHSA-phwx-ww2p-cv9v

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 9× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-20 20:16 UTCEPSS rescore
  2. 2026-09-19 18:57 UTCEG score recompute
  3. 2026-09-18 20:34 UTCEG score recompute
  4. 2026-09-18 20:10 UTCEG score recompute
  5. 2026-09-18 19:44 UTCEG score recompute
  6. 2026-09-18 19:28 UTCEPSS rescore
  7. 2026-09-17 21:20 UTCEG score recompute
  8. 2026-09-17 20:25 UTCEG score recompute
  9. 2026-09-17 20:24 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-50275?
CVE-2026-50275 is a high vulnerability published on September 17, 2026. The Datadog PHP Tracer provides application performance monitoring and distributed tracing for PHP. Prior to 1.19.2, ddtracedeserializebaggage in ext/distributedtracingheaders.c parses incoming W3C baggage HTTP headers without enforcing DDTRACEBAGGAGEMAXITEMS or DDTRACEBAGGAGEMAXBYTES. A remote…
When was CVE-2026-50275 disclosed?
CVE-2026-50275 was first published in the National Vulnerability Database on September 17, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-50275 actively exploited?
CVE-2026-50275 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 59.1% of all scored CVEs.
What is the CVSS score of CVE-2026-50275?
CVE-2026-50275 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-50275?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-50275, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-50275

Explore →

Is Your Infrastructure Affected by CVE-2026-50275?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs