CVE-2017-16654

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 2.7%, top 16% 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, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 3%CVSS: 7.5Exploit: NoneExposed: 0

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

An issue was discovered in Symfony before 2.7.38, 2.8.31, 3.2.14, 3.3.13, 3.4-BETA5, and 4.0-BETA5. The Intl component includes various bundle readers that are used to read resource bundles from the local filesystem. The read() methods of these classes use a path and a locale to determine the language bundle to retrieve. The locale argument value is commonly retrieved from untrusted user input (like a URL parameter). An attacker can use this argument to navigate to arbitrary directories via the dot-dot-slash attack, aka Directory Traversal.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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%
Exploitation3% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
84.2%
KEV
Not listed

Published

August 6, 2018

Last Modified

November 21, 2024

References (8)

Affected Packages

(2 across 1 ecosystem)
Packagist(2)
PackageVulnerable rangeFixed inDependents
symfony/intlv3.3.0 ... v3.3.9 (13 versions)3.3.13—
symfony/symfonyv3.3.0 ... v3.3.9 (13 versions)3.3.13—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 40× 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. 2026-07-23 14:15 UTCEPSS rescore
  2. 2026-07-23 01:28 UTCEG score recompute
  3. 2026-07-22 22:07 UTCEG score recompute
  4. 2026-07-22 14:04 UTCEPSS rescore
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  19. 2026-07-13 22:26 UTCEPSS rescore
  20. 2026-07-13 06:09 UTCEPSS rescore
  21. 2026-07-12 19:37 UTCOSV refresh
  22. 2026-07-12 05:43 UTCEPSS rescore
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  1. 2026-07-07 13:42 UTCEPSS rescore
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  5. 2026-07-04 06:28 UTCEPSS rescore
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  8. 2026-06-30 23:19 UTCEPSS rescore
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  10. 2026-06-28 04:53 UTCEPSS rescore
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  12. 2026-06-25 13:47 UTCEPSS rescore
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  14. 2026-06-24 14:02 UTCEPSS rescore
  15. 2026-06-24 04:29 UTCOSV refresh
  16. 2026-06-23 21:30 UTCEPSS rescore
  17. 2026-06-22 14:23 UTCEPSS rescore
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  19. 2026-06-21 14:54 UTCEPSS rescore
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  23. 2026-06-19 19:23 UTCEPSS rescore
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  25. 2026-06-18 17:50 UTCEPSS rescore
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  28. 2026-06-15 17:45 UTCEPSS rescore
  29. 2026-06-14 23:14 UTCEPSS rescore
  30. 2026-06-14 23:14 UTCEPSS rescore
  31. 2026-06-13 22:57 UTCEPSS rescore
  32. 2026-06-12 23:09 UTCEPSS rescore
  33. 2026-06-11 13:57 UTCEPSS rescore
  34. 2026-06-10 22:15 UTCEPSS rescore
  35. 2026-06-08 14:14 UTCEPSS rescore
  36. 2026-06-07 15:22 UTCEPSS rescore
  37. 2026-06-07 15:22 UTCEPSS rescore
  38. 2026-06-07 08:50 UTCOSV refresh
  39. 2026-06-06 13:45 UTCEPSS rescore
  40. 2026-06-06 13:45 UTCEPSS rescore
  41. 2026-06-05 22:44 UTCEPSS rescore
  42. 2026-06-05 06:08 UTCEPSS rescore
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  44. 2026-06-04 13:10 UTCEPSS rescore
  45. 2026-06-04 13:10 UTCEPSS rescore
  46. 2026-06-02 20:11 UTCEPSS rescore
  47. 2026-06-02 20:11 UTCEPSS rescore
  48. 2026-06-01 13:49 UTCEPSS rescore
  49. 2026-06-01 13:49 UTCEPSS rescore
  50. 2026-05-31 22:28 UTCEPSS rescore
  51. 2026-05-31 00:14 UTCEPSS rescore
  52. 2026-05-29 13:41 UTCEPSS rescore
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  59. 2026-05-26 07:17 UTCEPSS rescore
  60. 2026-05-26 07:17 UTCEPSS rescore
  61. 2026-05-23 02:34 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2017-16654?
CVE-2017-16654 is a high vulnerability published on August 6, 2018. An issue was discovered in Symfony before 2.7.38, 2.8.31, 3.2.14, 3.3.13, 3.4-BETA5, and 4.0-BETA5. The Intl component includes various bundle readers that are used to read resource bundles from the local filesystem. The read() methods of these classes use a path and a locale to determine the…
When was CVE-2017-16654 disclosed?
CVE-2017-16654 was first published in the National Vulnerability Database on August 6, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-16654 actively exploited?
CVE-2017-16654 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 84.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-16654?
CVE-2017-16654 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2017-16654?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-16654, 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.

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