CVE-2026-61556

HIGHPre-NVD 8.78.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (42nd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Elevated
8.7EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 8.7Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. From 10.26.0 until 10.27.1, the strip_html filter in src/filters/html.ts can enter an infinite loop when an input string contains <, includes at least one preceding character, and has no later >. In strip_html, the search for the next opener advances lt while the loop index remains unchanged when the closer search returns -1, and the equality-only stall guard does not exit because the loop index is less than lt. Reprocessing the same state indefinitely blocks template rendering and can cause denial of service with an input as short as a<. This issue is fixed in version 10.27.1.

CVSS v3
8.7
EG Score
8.7HIGHmedium confidence
EG Risk
70
EG Risk 70/100

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 (value × EchelonGraph’s weight)
Severity87% × 45%
The EG Score, 8.7 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
42nd
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 19, 2026

Last Modified

September 9, 2026

Advisory Details (4)

Auto-updated Aug 19, 2026
Patch available. Sources: github_release, github, github_pr, github_commit.
GitHub release Patch Available

v10.27.1

Patch available: harttle/liquidjs v10.27.1

https://github.com/harttle/liquidjs/releases/tag/v10.27.1
GitHub commit Patch Available

commit 5c3522f33928 (harttle/liquidjs)

Patch available: harttle/liquidjs v10.27.1 (contains commit 5c3522f33928)

https://github.com/harttle/liquidjs/commit/5c3522f33928aae66f0fe85c36e1d9015c768fe2
GitHub pull request Patch Available

fix(strip_html): avoid infinite loop on unclosed openers

Patch available: harttle/liquidjs v10.27.1 (PR #917 merged 2026-06-21)

https://github.com/harttle/liquidjs/pull/917
GitHub advisoryMentions a patch (unverified)

An infinite loop vulnerability in `strip_html` filter · Advisory · harttle/liquidjs · GitHub

https://github.com/harttle/liquidjs/security/advisories/GHSA-m7fp-h3p4-hr49

Vendor Advisories for CVE-2026-61556(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFix by version rangeDependents
liquidjs—
  • 10.26.0 up to 10.27.1: fixed in 10.27.1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 48× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-10-11 19:34 UTCEG score recompute
  2. 2026-10-11 16:49 UTCEG score recompute
  3. 2026-10-11 14:11 UTCEG score recompute
  4. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  5. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  6. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  7. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  8. 2026-10-08 06:16 UTCEG score recompute
  9. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  10. 2026-10-06 16:57 UTCEG score recompute
  11. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  12. 2026-10-06 03:43 UTCEG score recompute
  13. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  14. 2026-10-05 10:15 UTCEG score recompute
  15. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  16. 2026-10-03 17:03 UTCEG score recompute
  17. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  18. 2026-10-03 04:11 UTCEG score recompute
  19. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  20. 2026-10-02 01:21 UTCEG score recompute
  21. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  22. 2026-09-30 21:36 UTCEG score recompute
  23. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  24. 2026-09-30 08:35 UTCEG score recompute
  25. 2026-09-28 21:41 UTCEG score recompute
Show 65 more
  1. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  2. 2026-09-27 17:25 UTCEG score recompute
  3. 2026-09-27 04:24 UTCEG score recompute
  4. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  5. 2026-09-25 00:48 UTCEG score recompute
  6. 2026-09-23 22:11 UTCEG score recompute
  7. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  8. 2026-09-22 20:27 UTCEG score recompute
  9. 2026-09-22 07:35 UTCEG score recompute
  10. 2026-09-21 05:51 UTCEG score recompute
  11. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  12. 2026-09-20 04:05 UTCEG score recompute
  13. 2026-09-19 02:22 UTCEG score recompute
  14. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  15. 2026-09-18 00:37 UTCEG score recompute
  16. 2026-09-16 22:53 UTCEG score recompute
  17. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  18. 2026-09-16 10:01 UTCEG score recompute
  19. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  20. 2026-09-15 08:05 UTCEG score recompute
  21. 2026-09-13 17:30 UTCEG score recompute
  22. 2026-09-12 15:46 UTCEG score recompute
  23. 2026-09-12 02:54 UTCEG score recompute
  24. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  25. 2026-09-11 14:02 UTCEG score recompute
  26. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  27. 2026-09-10 12:18 UTCEG score recompute
  28. 2026-09-09 02:14 UTCEG score recompute
  29. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  30. 2026-09-07 19:27 UTCEG score recompute
  31. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  32. 2026-09-06 17:34 UTCEG score recompute
  33. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  34. 2026-09-05 15:49 UTCEG score recompute
  35. 2026-09-04 14:05 UTCEG score recompute
  36. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  37. 2026-09-02 23:23 UTCEG score recompute
  38. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  39. 2026-09-01 21:28 UTCEG score recompute
  40. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  41. 2026-09-01 08:36 UTCEG score recompute
  42. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  43. 2026-08-31 05:13 UTCEG score recompute
  44. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  45. 2026-08-30 03:29 UTCEG score recompute
  46. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  47. 2026-08-29 01:45 UTCEG score recompute
  48. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  49. 2026-08-27 19:40 UTCEG score recompute
  50. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  51. 2026-08-26 17:54 UTCEG score recompute
  52. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  53. 2026-08-25 15:23 UTCEG score recompute
  54. 2026-08-25 14:35 UTCEG score recompute
  55. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  56. 2026-08-24 17:07 UTCEG score recompute
  57. 2026-08-23 02:29 UTCEG score recompute
  58. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  59. 2026-08-22 00:46 UTCEG score recompute
  60. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  61. 2026-08-20 23:01 UTCEG score recompute
  62. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  63. 2026-08-19 21:19 UTCEG score recompute
  64. 2026-08-19 21:04 UTCEG score recomputeFirst assessed: 8.7 HIGH
  65. 2026-08-19 21:03 UTCMITRE cvelistV5first tracked

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-61556?
CVE-2026-61556 is a high-severity vulnerability; its CVE record was published on August 19, 2026. LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. From 10.26.0 until 10.27.1, the striphtml filter in src/filters/html.ts can enter an infinite loop when an input string contains <, includes at least one preceding character, and has no later >. In striphtml, the…
When was the CVE record for CVE-2026-61556 published?
The CVE record for CVE-2026-61556 was published on August 19, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 9, 2026; the record at its source may have been updated since.
Is CVE-2026-61556 actively exploited?
CVE-2026-61556 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (42nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-61556?
CVE-2026-61556 has a CVSS base score of 8.7 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-61556?
A fix for CVE-2026-61556 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-61556 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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