Pi is a minimal terminal coding harness. From 0.74.0 until 0.78.1, Pi HTML exports render session Markdown into a static HTML file. It did not consistently reject unsafe Markdown link and image URL schemes. In versions with scheme filtering, C0 control characters in the URL scheme could bypass the check because browsers normalize those characters before navigation. This vulnerability is fixed in 0.78.1.
CVE-2026-54326
LOWPre-NVD 2.52.5—
EchelonGraph scoreMEDIUM confidence
This low-severity CVE scores 2.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 97% 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
2.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 2.5Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 2.5
- EG Score
- 2.5(medium)
- EPSS
- 3.1%
- KEV
- Not listed
Published
June 16, 2026
Last Modified
June 25, 2026
References (3)
- security-advisories@githubhttps://github.com/earendil-works/pi/commit/6cb23f9b5d5b6d1747672f535b167d0d809ac010
- security-advisories@githubhttps://github.com/earendil-works/pi/releases/tag/v0.78.1
- security-advisories@githubhttps://github.com/earendil-works/pi/security/advisories/GHSA-7v5m-pr3q-6453
Vendor Advisories for CVE-2026-54326(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(2 across 1 ecosystem)
npm(2)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| @earendil-works/pi-coding-agent | — | 0.78.1 | — |
| @mariozechner/pi-coding-agent | — | — | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 22× 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.
- 2026-07-06 16:27 UTCEPSS rescore
- 2026-07-06 16:27 UTCEPSS rescore
- 2026-07-06 02:23 UTCEPSS rescore
- 2026-07-06 02:23 UTCEPSS rescore
- 2026-07-05 08:39 UTCEG score recompute
- 2026-07-04 06:31 UTCEPSS rescore
- 2026-07-04 06:31 UTCEPSS rescore
- 2026-07-02 04:31 UTCEG score recompute
- 2026-06-30 23:22 UTCEPSS rescore
- 2026-06-29 14:06 UTCEPSS rescore
- 2026-06-29 14:06 UTCEPSS rescore
- 2026-06-29 03:35 UTCEG score recompute
- 2026-06-28 14:07 UTCEPSS rescore
- 2026-06-28 04:56 UTCEPSS rescore
- 2026-06-28 04:56 UTCEPSS rescore
- 2026-06-27 03:08 UTCEPSS rescore
- 2026-06-26 02:37 UTCEG score recompute
- 2026-06-25 13:49 UTCEPSS rescore
- 2026-06-24 14:05 UTCEPSS rescore
- 2026-06-23 01:41 UTCEG score recompute
- 2026-06-20 00:42 UTCEG score recompute
- 2026-06-16 23:44 UTCEG score recompute
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2026-54326?
CVE-2026-54326 is a low vulnerability published on June 16, 2026. Pi is a minimal terminal coding harness. From 0.74.0 until 0.78.1, Pi HTML exports render session Markdown into a static HTML file. It did not consistently reject unsafe Markdown link and image URL schemes. In versions with scheme filtering, C0 control characters in the URL scheme could bypass the…
When was CVE-2026-54326 disclosed?
CVE-2026-54326 was first published in the National Vulnerability Database on June 16, 2026, with the most recent update on June 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54326 actively exploited?
CVE-2026-54326 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-54326?
CVE-2026-54326 has a CVSS v3 base score of 2.5 (NVD).
How do I remediate CVE-2026-54326?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54326, 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
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-54326
Is Your Infrastructure Affected by CVE-2026-54326?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.