CVE-2017-18356

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-14. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 8.8Exploit: None knownExposed: 0

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

In the Automattic WooCommerce plugin before 3.2.4 for WordPress, an attack is possible after gaining access to the target site with a user account that has at least Shop manager privileges. The attacker then constructs a specifically crafted string that will turn into a PHP object injection involving the includes/shortcodes/class-wc-shortcode-products.php WC_Shortcode_Products::get_products() use of cached queries within shortcodes.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: 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
Severity88% × 45%
Exploitation2% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
79%
KEV
Not listed

Published

January 15, 2019

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated Aug 18, 2026
No patch confirmed yet.
generic

Private Site

https://woocommerce.wordpress.com/2017/11/16/woocommerce-3-2-4-security-fix-release-notes/
generic

Sonar blog | Sonar

https://blog.ripstech.com/2018/woocommerce-php-object-injection/

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 2× in last 7d / 18× 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.

Showing the most recent 100 of 131 total refreshes for this CVE.

  1. 2026-09-24 13:59 UTCEPSS rescore
  2. 2026-09-18 19:22 UTCEPSS rescore
  3. 2026-09-17 19:22 UTCEPSS rescore
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  1. 2026-08-16 14:51 UTCEPSS rescore
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  8. 2026-08-06 07:21 UTCOSV refresh
  9. 2026-08-05 19:12 UTCEPSS rescore
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  18. 2026-07-23 01:28 UTCEG score recompute
  19. 2026-07-22 22:07 UTCEG score recompute
  20. 2026-07-22 14:04 UTCEPSS rescore
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  24. 2026-07-20 23:47 UTCOSV refresh
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  48. 2026-07-03 19:26 UTCOSV refresh
  49. 2026-07-02 16:54 UTCEPSS rescore
  50. 2026-07-01 15:02 UTCEPSS rescore
  51. 2026-06-30 23:19 UTCEPSS rescore
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  67. 2026-06-19 19:23 UTCEPSS rescore
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  69. 2026-06-18 17:50 UTCEPSS rescore
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  73. 2026-06-15 17:45 UTCEPSS rescore
  74. 2026-06-15 07:43 UTCOSV refresh
  75. 2026-06-14 23:14 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2017-18356?
CVE-2017-18356 is a high vulnerability published on January 15, 2019. In the Automattic WooCommerce plugin before 3.2.4 for WordPress, an attack is possible after gaining access to the target site with a user account that has at least Shop manager privileges. The attacker then constructs a specifically crafted string that will turn into a PHP object injection…
When was CVE-2017-18356 disclosed?
CVE-2017-18356 was first published in the National Vulnerability Database on January 15, 2019, 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-2017-18356 actively exploited?
CVE-2017-18356 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 20.6% of all scored CVEs.
What is the CVSS score of CVE-2017-18356?
CVE-2017-18356 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2017-18356?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-18356, 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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