How severe is CVE-2021-23472?

CVE-2021-23472 has a CVSS score of 6.1/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2021-23472?

CVE-2021-23472 affects the following packages: bootstrap-table (npm). Ecosystems affected: npm.

How do I fix CVE-2021-23472?

No patched version of bootstrap-table has shipped for CVE-2021-23472 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.

How do I detect CVE-2021-23472 in my npm dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for bootstrap-table. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

How do I mitigate CVE-2021-23472 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

How does O3 Security protect against CVE-2021-23472?

O3 pinpoints whether CVE-2021-23472 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Is CVE-2021-23472 actively exploited in the wild?

Yes. There are 6 known exploit references for CVE-2021-23472, including 6 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2021-23472?

CVE-2021-23472 has an EPSS (Exploit Prediction Scoring System) score of 2.3%, placing it in the 82th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2021-23472?

CVE-2021-23472 is classified as CWE-843 (CWE-843). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2021-23472 published, and has it been updated?

CVE-2021-23472 was published on November 3, 2021 and was last updated on July 9, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

📦

📦 npm

Not in CISA KEV

MEDIUM severity

CVE-2021-23472

MEDIUM

CVE-2021-23472 is a medium-severity (CVSS 6.1) CWE-843 vulnerability in bootstrap-table. 6 public exploit references exist, so weaponization risk is real. O3 Security confirms whether CVE-2021-23472 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Cross-site Scripting in bootstrap-table

Also known asGHSA-mw6q-98mp-g8g8

Published

Nov 3, 2021

Updated

Jul 9, 2026

Affected

1 pkg

Patched

None yet

Exploits

6 known

Exploitation data as of Jul 31, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

2.3%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs82th percentile — riskier than 82% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

How urgent is this, really

CVE-2021-23472 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.

Where this sits among everything scored

Of 356,453 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, a proxy for how much of the ecosystem is exposed.

bootstrap-tablenpm

46Kdownloads / week

Description

This affects versions before 1.19.1 of package bootstrap-table. A type confusion vulnerability can lead to a bypass of input sanitization when the input provided to the escapeHTML function is an array (instead of a string) even if the escape attribute is set.

Affected Packages

1 total

Ecosystem	Package	Vulnerable range	Fix
📦npm	`bootstrap-table`	all versions	No fix

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.