CVE-2026-45137
Anchor flaw: system program ID check bug enables arbitrary CPI.
Is CVE-2026-45137 being exploited?
Not confirmed. CVE-2026-45137 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.28% probability of exploitation in the next 30 days.
How severe is CVE-2026-45137?
CVE-2026-45137 is rated High with a CVSS score of 8.2. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-45137?
Yes. A fix has been recorded for CVE-2026-45137. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-45137 affect?
CVE-2026-45137 affects Anchor framework 1.0.0–1.0.1, Solana programs using Anchor (System program ID). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-45137?
Upgrade to Anchor 1.0.2+
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Arbitrary cross-program invocation or payment bypass by spoofing the system program ID in Anchor 1.0.0–1.0.1.
Patch when possible
- affected>= 1.0.0 and < 1.0.2
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.