CVE-2026-119716

CRITICALPre-NVD 9.89.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This critical-severity CVE scores 9.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (40th percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 8.1 is lower than this score; a lower GitHub score revises it only when its advisory is newer than the CVE record's last change, and this advisory (published 2026-10-30) is not newer than that change (2026-11-06), so it does not.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Elevated

Also known asEUVD-2026-114121 (ENISA EUVD) · GHSA-xvx4-89q3-mchg (GitHub Security Advisories)Source: ENISA EUVD

9.8EG
EchelonGraph verdictPlan mitigationNo fix is confirmed yet: check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule 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: 9.8Exploit: No code on recordExposed services: Not assessed

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

The CVE record's CNA (VulnCheck) lists wbond pybars3 versions up to and including 0.9.7; up9inc pybars4 versions up to and including 0.9.13 as affected. No release containing a fix is confirmed on record.

pybars3 through 0.9.7 and pybars4 through 0.9.13 contain a code injection vulnerability in pybars/_compiler.py that allows template authors to execute Python code via unescaped bracketed path segments. Attackers can supply Handlebars templates with crafted segments in helper or block arguments to break out of string literals and execute Python in the application process.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
75
EG Risk 75/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity98% × 45%
Impact severity (EG Severity): CVSS 9.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
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, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (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: No fix is confirmed yet. Check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
40th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.

EG Severity
9.8 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-12). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track* at medium mission impactTrack at low, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 3 days if the affected system is publicly exposed; 60 days if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

No fix is confirmed yet. Check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (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)3 days if the affected system is publicly exposed; 60 days if it is not.

No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (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

October 30, 2026

Last Modified

November 6, 2026

Advisory Details (7)

Auto-updated Nov 7, 2026
🔬 Proof of concept available. No fix on record yet.
Web page🟡 PoC Available

advisories/pybars3.md at 702e98db9642ece70d9e2150076d8014ffec2db3 · vladko312/advisories · GitHub

https://github.com/vladko312/advisories/blob/702e98db9642ece70d9e2150076d8014ffec2db3/pybars3.md
Web page

pybars3 through 0.9.7 Code Injection via Bracketed Path Segments | Advisories | VulnCheck

https://www.vulncheck.com/advisories/pybars3-through-0.9.7-code-injection-via-bracketed-path-segments
Web page

Vulnerability reporting channel · Issue #88 · wbond/pybars3 · GitHub

https://github.com/wbond/pybars3/issues/88
Web page

pybars3/pybars/_compiler.py at 0.9.7 · wbond/pybars3 · GitHub

https://github.com/wbond/pybars3/blob/0.9.7/pybars/_compiler.py#L159-L160
Web page

GitHub - wbond/pybars3: Handlebars.js template support for Python 3 and 2 · GitHub

https://github.com/wbond/pybars3
Web page

pybars4/pybars/_compiler.py at 0.9.13 · up9inc/pybars4 · GitHub

https://github.com/up9inc/pybars4/blob/0.9.13/pybars/_compiler.py#L153-L154
Web page

GitHub - up9inc/pybars4: Handlebars.js template support for Python 3 · GitHub

https://github.com/up9inc/pybars4

Vendor Advisories for CVE-2026-119716(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 34× 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 its CVE.org record (CNA or CISA ADP). 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

  1. 2026-11-13 16:50 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  2. 2026-11-13 02:13 UTCEchelonGraph re-scored
  3. 2026-11-13 02:13 UTCGHSA enrichmentGHSA-xvx4-89q3-mchg · GitHub severity CRITICAL · GitHub CVSS 8.1
  4. 2026-11-12 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  5. 2026-11-12 02:27 UTCEchelonGraph re-scored
  6. 2026-11-12 02:26 UTCGHSA enrichmentGHSA-xvx4-89q3-mchg · GitHub severity CRITICAL · GitHub CVSS 8.1
  7. 2026-11-11 16:38 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  8. 2026-11-11 02:40 UTCEchelonGraph re-scored
  9. 2026-11-11 02:40 UTCGHSA enrichmentGHSA-xvx4-89q3-mchg · GitHub severity CRITICAL · GitHub CVSS 8.1
  10. 2026-11-10 16:42 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  11. 2026-11-10 16:34 UTCGHSA enrichmentGHSA-xvx4-89q3-mchg · GitHub severity CRITICAL · GitHub CVSS 8.1
  12. 2026-11-09 16:46 UTCEchelonGraph re-scored
  13. 2026-11-09 16:46 UTCGHSA enrichmentGHSA-xvx4-89q3-mchg · GitHub severity CRITICAL · GitHub CVSS 8.1
  14. 2026-11-09 16:34 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  15. 2026-11-08 17:00 UTCEchelonGraph re-scored
  16. 2026-11-08 17:00 UTCGHSA enrichmentGHSA-xvx4-89q3-mchg · GitHub severity CRITICAL · GitHub CVSS 8.1
  17. 2026-11-08 16:38 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  18. 2026-11-07 17:14 UTCEchelonGraph re-scored
  19. 2026-11-07 17:14 UTCGHSA enrichmentGHSA-xvx4-89q3-mchg · GitHub severity CRITICAL · GitHub CVSS 8.1
  20. 2026-11-07 16:38 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  21. 2026-11-06 17:28 UTCEchelonGraph re-scored
  22. 2026-11-06 17:28 UTCGHSA enrichmentGHSA-xvx4-89q3-mchg · GitHub severity CRITICAL · GitHub CVSS 8.1
  23. 2026-11-06 16:36 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  24. 2026-11-06 16:27 UTCEchelonGraph re-scored
  25. 2026-11-06 16:27 UTCGHSA enrichmentGHSA-xvx4-89q3-mchg · GitHub severity CRITICAL · GitHub CVSS 8.1
Show 26 more
  1. 2026-11-06 16:22 UTCEchelonGraph re-scored
  2. 2026-11-06 16:22 UTCGHSA enrichmentGHSA-xvx4-89q3-mchg · GitHub severity CRITICAL · GitHub CVSS 8.1
  3. 2026-11-05 23:55 UTCOSV refresh
  4. 2026-11-05 17:56 UTCEchelonGraph re-scored
  5. 2026-11-05 17:56 UTCGHSA enrichmentGHSA-xvx4-89q3-mchg · GitHub severity CRITICAL · GitHub CVSS 8.1
  6. 2026-11-05 16:36 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  7. 2026-11-04 18:10 UTCEchelonGraph re-scored
  8. 2026-11-04 18:10 UTCGHSA enrichmentGHSA-xvx4-89q3-mchg · GitHub severity CRITICAL · GitHub CVSS 8.1
  9. 2026-11-04 16:34 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  10. 2026-11-03 18:23 UTCEchelonGraph re-scored
  11. 2026-11-03 18:23 UTCGHSA enrichmentGHSA-xvx4-89q3-mchg · GitHub severity CRITICAL · GitHub CVSS 8.1
  12. 2026-11-03 16:46 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  13. 2026-11-02 21:26 UTCEchelonGraph re-scored
  14. 2026-11-02 21:26 UTCGHSA enrichmentGHSA-xvx4-89q3-mchg · GitHub severity CRITICAL · GitHub CVSS 8.1
  15. 2026-11-02 20:57 UTCEchelonGraph re-scored▲ 1.70
  16. 2026-11-02 20:57 UTCGHSA enrichmentGHSA-xvx4-89q3-mchg · GitHub severity CRITICAL · GitHub CVSS 8.1
  17. 2026-11-02 20:56 UTCMITRE cvelistV5CVSS v3 → 9.8 · CVSS v4 → 9.3 · severity → CRITICAL
  18. 2026-11-02 16:44 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  19. 2026-11-01 16:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  20. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  21. 2026-10-30 19:28 UTCEchelonGraph re-scored
  22. 2026-10-30 19:28 UTCGHSA enrichmentGHSA-xvx4-89q3-mchg · GitHub severity CRITICAL · GitHub CVSS 8.1
  23. 2026-10-30 17:02 UTCENISA EUVD ID recordedEUVD-2026-114121 · Source: ENISA EUVD
  24. 2026-10-30 16:27 UTCEchelonGraph re-scored
  25. 2026-10-30 15:25 UTCEchelonGraph re-scoredFirst assessed: 8.1 HIGH
  26. 2026-10-30 15:25 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-119716?
CVE-2026-119716 is a critical-severity vulnerability; its CVE record was published on October 30, 2026. pybars3 through 0.9.7 and pybars4 through 0.9.13 contain a code injection vulnerability in pybars/_compiler.py that allows template authors to execute Python code via unescaped bracketed path segments. Attackers can supply Handlebars templates with crafted segments in helper or block arguments to…
When was CVE-2026-119716 made public?
CVE-2026-119716 was made public on July 1, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on October 30, 2026. EchelonGraph's copy of the record carries a last-modified date of November 6, 2026; the record at its source may have been updated since.
Is CVE-2026-119716 actively exploited?
CVE-2026-119716 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (40th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-119716?
CVE-2026-119716 has a CVSS base score of 9.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-119716?
No fix for CVE-2026-119716 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The CVE record's CNA (VulnCheck) lists wbond pybars3 versions up to and including 0.9.7; up9inc pybars4 versions up to and including 0.9.13 as affected. No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-119716 are linked in the Vendor Advisories panel on this page.

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